This document is a catalog from Synthink Research Chemicals listing various API impurities and related compounds available for purchase. It provides contact information for the company, including phone number and email, and then lists over 100 catalog items grouped by API. For each item, it provides the compound name, CAS number if available, quantity available, and estimated lead time.

1. Synthink Research Chemicals
Catalog: API Impurities
Conatct: Dr. Vijay Pawar
www.synthinkchemicals.com
Email: info@synthinkchemicals.com
Phone: (+91) 800 744 7414
If you do not find your product of interest in our product list, send us an email at
info@synthinkchemicals.com or call us at (+91) 800 744 7414.
We will be happy to further discuss your requirements.
Catalog No. Impurity Name CAS No. Stock (10-500 mg)
Rosuvastatin / Lead Time #
SA12101 5-Oxo Rosuvastatin Calcium Salt In Stock
SA12102 (3R,5R)-Rosuvastatin calcium Salt (Anti isomer) In Stock
SA12103 Rosuvastatin Lactone 503610-43-3 In Stock
SA12104 Rosuvastatin EP Impurity A (Acetone-adduct) In Stock
SA12105 (3S,5R)-Rosuvastatin Sodium Salt Acid: 1242184-42-4 2-3 Weeks
SA12106 Rosuvastatin EP Impurity E (Calcium Salt) NA In Stock
SA12107 Rosuvastatin EP Impurity J (Calcium Salt) NA 2-3 Weeks
SA12108
Diphenyl[4-(4-Fluorophenyl)-6-isopropyl-2-(N-
methylmethylsulfonyl)amino-pyrimidin-5-yl-
methyl]phosphine Oxide 289042-10-0 2-3 Weeks
SA12109
Ethyl 4-(4-Fluorophenyl)-6-isopropyl-2-amino-
pyrimidine-5-carboxylate 712320-67-7 2-3 Weeks
SA12110
Ethyl 4-(4-Fluorophenyl)-6-isopropyl-2-(N-
methylsulfonamido)pyrimidine -5-carboxylate 1035595-71-1 2-3 Weeks
SA12111
Ethyl 4-(4-Fluorophenyl)-6-isopropyl-2-
(methylsulfonyl)pyrimidine-5-carboxylate 147118-28-3 2-3 Weeks
SA12112
Ethyl 4-(4-Fluorophenyl)-6-isopropyl-2-
methylthiopyrimidine-5-carboxylate 147118-27-2 2-3 Weeks
SA12113 Ethyl Propionylacetate 4949-44-4 2-3 Weeks
SA12114
N-[(6R)-8-Fluoro-5,6-dihydro-4-(1-methylethyl)-
6-[(2S,4R)-tetrahydro-4-hydroxy-6-oxo-2H-
pyran-2-yl]benzo[h]quinazolin-2-yl]-N-
methylmethanesulfonamide 854898-46-7 2-3 Weeks
SA12115
N-[(6S)-8-Fluoro-5,6-dihydro-4-(1-methylethyl)-
6-[(2S,4R)-tetrahydro-4-hydroxy-6-oxo-2H-
pyran-2-yl]benzo[h]quinazolin-2-yl]-N-
methylmethanesulfonamide 854898-47-8 2-3 Weeks
SA12116
(3S,5R)-5-((S)-8-Fluoro-4-isopropyl-2-(N-
methylmethylsulfonamido)-5,6-
dihydrobenzo[h]quinazolin-6-yl)-3,5-
dihydroxypentanoate Sodium Salt NA 2-3 Weeks
SA12117
(3S,5S)-5-((R)-8-Fluoro-4-isopropyl-2-(N-
methylmethylsulfonamido)-5,6-
dihydrobenzo[h]quinazolin-6-yl)-3,5-
dihydroxypentanoate Sodium Salt NA 2-3 Weeks
SA12118
(3S,5R)-5-((R)-8-fluoro-4-isopropyl-2-(N-
methylmethylsulfonamido)-5,6-
dihydrobenzo[h]quinazolin-6-yl)-3,5-
dihydroxypentanoate Sodium Salt NA 2-3 Weeks
# Lead time is indicative, it may vary.

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SA12119
N-Desmethyl Rosuvastatin Disodium Salt
Monohydrate free acid: 371775-74-5 2-3 Weeks
SA12120 Rosuvastatin tert-Butyl Ester 1283766-30-2 2-3 Weeks
SA12121 3,5-Di(tert-butyldimethylsilyl) Rosuvastatin 1353050-10-8 2-3 Weeks
SA12122
3,5-Di(tert-butyldimethylsilyl) Rosuvastatin
Allyl Ester 2-3 Weeks
SA12123 (2E,5R,6E)-3-Dehydroxy Rosuvastatin 2-3 Weeks
SA12124 rac-(4E,6E)-5-Dehydroxy Rosuvastatin 2-3 Weeks
SA12125 (3S)-4-Chloro-3-hydroxybutyronitrile 127913-44-4 2-3 Weeks
SA12126
(3R,5S)-6-Chloro-3,5-dihydroxyhexanoic Acid
tert-Butyl Ester 154026-93-4 2-3 Weeks
SA12127
S-Demethyl (E)-S-[4-(4-Fluorophenyl)-6-
isopropyl-2-(N-
methylmethylsulfonamido)pyrimidin-5-ethenyl
Rosuvastatin NA 2-3 Weeks
SA12128
S-Demethyl S-[4-(4-Fluorophenyl)-6-isopropyl-
2-(N-methylmethylsulfonamido)pyrimidin-5-
hydroxyethyl Rosuvastatin NA 2-3 Weeks
SA12129 5-Oxo Rosuvastatin t-butyl ester NA In Stock
Colesevelam
SA10201 Bromoquat (Impurity 1) 32765-81-4 In Stock
SA10202 Aminoquat (Impurity 2) NA In Stock
SA10203 Decylaminoquat (Impurity 3) NA In Stock
SA10204 Amino Dihexylquat (Impurity 4) NA 2-3 Weeks
SA10205 Decan-1-amine hydrochloride 143-09-9 In Stock
SA10206 Di-decylamine hydrochloride 2486-84-2 In Stock
SA10207 1-Methoxy Decane 7289-52-3 In Stock
SA10207 2,2’-azobis(2-amidinopropane) dihydrochloride 2997-92-4 In Stock
Fulvestrant
SA11801 6-Keto Fulvestrant NA In Stock
SA11802 7β-Fulvestrant 407577-53-1 2-3 Weeks
SA11803 ∆6-Fulvestrant NA 2-3 Weeks
SA11804 Fulvestrant extended NA In Stock
SA11805 Fulvestrant Sulfone 98008-06-1 In Stock
SA11806
S-Deoxo ∆6-Fulvestrant; S-Deoxo Fulvestrant
Impurity E; NA 2-3 Weeks
SA11807
S-Deoxo-3,17-bis-(O-tetrahydro-2H-pyran-2-yl)-
6-hydroxy-fulvestrant NA 2-3 Weeks
SA11808
S-Deoxo-3,17β-bis-(O-tetrahydro-2H-pyran-2-
yl)-6-oxo-fulvestrant 862700-70-7 2-3 Weeks
SA11809
(17β)-3,17-Bis-O-[(tetrahydro-2H-pyran-2-yl)-6-
O-[9-[(4,4,5,5,5-
Pentafluoropentyl)sulfenyl]nonyl-estra-
1,3,5(10),6(7)-tetraene NA 2-3 Weeks
SA11810 Fulvestrant 129453-61-8 In Stock
SA11811 Fulvestrant 3-Sulfate Sodium Salt 403656-83-7 2-3 Weeks
SA11812 Fulvestrant 17-Ketone 403656-89-3 2-3 Weeks
SA11813 3-O-Methyl Fulvestrant 1221256-46-7 2-3 Weeks
SA11814 Fulvestrant Impurity D NA 2-3 Weeks
SA11815 Fulvestrant Impurity D Tetraacetate NA 2-3 Weeks
SA11816
7β-[9-[[9-[(4,4,5,5,5-
Pentafluoropentyl)sulfenyl]nonyl]sulfenyl]nonyl
]estra-4-ene-3,17β-diol 17-Acetate NA 2-3 Weeks
Catalog: API Impurities www.synthinkchemicals.com Page 2

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SA11817 Fulvestrant Impurity C NA 2-3 Weeks
SA11818
9-[[9-[(4,4,5,5,5-
Pentafluoropentyl)sulfenyl]nonyl]sulfenyl]nonyl
Bromide NA 2-3 Weeks
SA11819
9-[[9-[(4,4,5,5,5-
Pentafluoropentyl)sulfenyl]nonyl]sulfenyl]nona
nol NA 2-3 Weeks
Tiotropium
SA11701 Tiotropium Impurity A 4746-63-8 In Stock
SA11702 Tiotropium Impurity B 136310-64-0 In Stock
SA11703 Tiotropium Impurity C NA In Stock
SA11704 Tiotropium Impurity D 136310-66-2 In Stock
SA11705 Tiotropium Impurity E 26447-85-8 In Stock
SA11706 Tiotropium Impurity F 704-38-1 In Stock
SA11707 Tiotropium Impurity G 1508-46-9 In Stock
SA11708 Tiotropium Impurity H 845870-40-8 In Stock
SA11709 Tiotropium Impurity I 136521-48-7 In Stock
SA11710 Tiotropium Impurity J NA
SA11711 Tiotropium Impurity K NA In Stock
SA11712 Iso Tiotropium Bromide 136431-94-2 In Stock
SA11713 (−)-Scopolamine hydrobromide trihydrate 6533-68-2 In Stock
SA11714 Tropenol hydrochloride 99709-24-7 In Stock
SA11715 Scopine Hydrochloride 85700-55-6 In Stock
SA11716 Pseudoscopine 498-46-4 In Stock
SA11717
2-Hydroxy-2-(thiophen-2-yl)-2-(thiophen-3-
yl)acetic Acid Methyl Ester NA In Stock
SA11718
α-Hydroxy-α-3-thienyl-2-thiopheneacetic Acid 9-
Methyl-3-oxa-9-azatricyclo[3.3.1.02,4]non-7-yl
Ester 783273-13-2 In Stock
SA11719 Scopoline 487-27-4 In Stock
SA11720 Norscopine 6872-53-3
Salmeterol
SA10101 Salmeterol Impurity B EP 94749-02-7 2-3 Weeks
SA10102 Salmeterol Impurity C EP 94749-11-8 2-3 Weeks
SA10103 Salmeterol Impurity E 108928-81-0 In Stock
SA10104 Salmeterol Impurity F EP 1391054-40-2 2-3 Weeks
Tiagabine
SA10501 Tiagabine Impurity 1 NA 2-3 Weeks
SA10502 Tiagabine Impurity 2 161014-56-8 2-3 Weeks
SA10503 Bis(3-methylthien-2-yl)methanone 30717-55-6 2-3 Weeks
Meclofenamic Acid
SA10601 Meclofenamic Acid 644-62-2 2-3 Weeks
SQ109
SA10701 SQ109 502487-67-4 2-3 Weeks
Pravastatin
SA10801 Pravastatin Lactone 85956-22-5 2-3 Weeks
Sulpiride
SA10901 Sulpiride Impurity B 33045-52-2 In Stock
SA10902 Sulpiride Impurity D 22117-85-7 In Stock
Diacerein
SA11001 Diacerein Impurity H 25395-11-3 In Stock
SA11002 Diacerein Impurity F 13928-72-8 In Stock
SA11003 Diacerin Impurity G NA In Stock
Irganox
Catalog: API Impurities www.synthinkchemicals.com Page 3

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SA11101 Irganox-259 35074-77-2 In Stock
SA11102
Octadecyl 3-(3-tert-butyl-4-
hydroxyphenyl)propanoate NA In Stock
SA11103 Octadecyl-4-hydroxyphenylpropionate NA In Stock
SA11104 1-Octadecanal 638-66-4 In Stock
SA11105
7,9-Di-tert-butyl-1-oxa-spiro[4.5]deca-6,9-diene-
2,8-dione 82304-66-3 2-3 Weeks
Hydrochlorothiazide
SA11201 5-chlorohydrochlorothiazide 5233-42-1 In Stock
Celecoxib
SA11301
5-(4-methylphenyl)-3-(trifluoromethyl)-1H-
pyrazole 26974-15-2 In Stock
Diclofenac
SA11401 PPG-1 and PPG-2 2-3 Weeks
Bromhexine
SA11501 Bromhexine EP Impurity A 50739-76-9 In Stock
SA11502 Bromhexine EP Impurity B 50910-55-9 In Stock
SA11503 Bromhexine EP Impurity D NA In Stock
Clotrimazole
SA11601 Clotrimazole related Compound A 66774-02-5 2-3 Weeks
Zolmitriptan
SA11901 Zolmitriptan R-Isomer 139264-24-7 In Stock
SA11902 Didesmethyl Zolmitriptan 139264-15-6 2-3 Weeks
SA11903 Zolmitriptan N-Oxide 251451-30-6 2-3 Weeks
SA11904 Zolmitriptan USP Related Compound A 139264-35-0 2-3 Weeks
SA11905 Zolmitriptan USP Related Compound B 139264-69-0 2-3 Weeks
SA11906 Zolmitriptan USP Related Compound D 191864-24-1 2-3 Weeks
SA11907 (S)-4-(4-Aminobenzyl)-2-(1H)-oxazolidinone 152305-23-2 2-3 Weeks
Azithromycin
SA10301 Azithromycin Impurity E 612069-27-9 In Stock
SA10302 Azithromycin Impurity F 612069-28-0 In Stock
SA10303 Azithromycin Impurity I 172617-84-4 In Stock
SA10304 Azithromycin Impurity J 117693-41-1 In Stock
SA10305 Azithromycin Impurity L 90503-06-3 In Stock
SA10306 Azithromycin Impurity M NA In Stock
SA10307 Azithromycin Impurity N 765927-71-7 In Stock
SA10308 Azithromycin Impurity G 612069-31-5 In Stock
SA10309 Azithromycin Impurity H 612069-30-4 In Stock
Bupropion
SA12201 rac threo-Dihydro Bupropion 92264-82-9 In Stock
SA12202 rac erythro-Dihydro Bupropion 99102-04-2 In Stock
SA12203 Hydroxy Bupropion 357399-43-0 In Stock
SA12204 3’-Dechloro-4’-chloro Bupropion 1251851-01-0 In Stock
SA12205 1-(3-Chlorophenyl)-2-hydroxy-1-propanone 152943-33-4 2-3 Weeks
SA12206 1-(3-Chlorophenyl)-1-hydroxy-2-propanone 857233-13-7 2-3 Weeks
SA12207 (S)-Bupropion L-Tartaric Acid Salt NA 2-3 Weeks
SA12208 1-(3-Chlorophenyl)-1,2-propanedione 10557-17-2 2-3 Weeks
SA12209 (R)-Bupropion D-Tartaric Acid Salt free base: 437723-96-1 2-3 Weeks
SA12210 1-(3-Chlorophenyl)-1,2-propanedione 2-Oxime 56472-71-0 2-3 Weeks
SA12211
2-(tert-Butylamino)-3’,4’-
dichloropropiophenone Hydrochloride freebase: 1193779-34-8 2-3 Weeks
SA12212
2-(tert-Butylamino)-3’,5’-
dichloropropiophenone Hydrochloride freebase: 1193779-48-4 2-3 Weeks
SA12213 (S)-1-(3-Chlorophenyl)-2-hydroxy-1-propanone 287477-53-6 2-3 Weeks
Catalog: API Impurities www.synthinkchemicals.com Page 4

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SA12214 (R)-1-(3-Chlorophenyl)-2-hydroxy-1-propanone 291275-46-2 2-3 Weeks
SA12215 5-Chloro Bupropion Fumarate 1193779-50-8 2-3 Weeks
SA12216 4-Chloro Bupropion Fumarate 1193779-36-0 2-3 Weeks
SA12217 3-Deschloro-2-chloro Bupropion Hydrochloride 1049718-57-1 2-3 Weeks
SA12218 Deschloro Bupropion Hydrochloride 63199-74-6 2-3 Weeks
SA12219
6-(3-Chlorophenyl)-6-hydroxy-5-methyl-3-
thiomorpholine Carboxylic Acid (Mixture of
Diastereomers) NA 2-3 Weeks
SA12220 3’-Dechloro-3’-bromo Bupropion Fumarate 1251850-99-3 2-3 Weeks
Glyburide
SA12301
ethyl [(4-{2-[(5-chloro-2-
methoxybenzoyl)amino]ethyl}phenyl)sulfonyl]c
arbamate; Glyburide Impurity D 14511-59-2 In Stock
SA12302 3-Chloro Glyburide 57334-89-1
Cinnarizine
SA12401 Cinnarizine Impurity A 841-77-0 In Stock
SA12402 Cinnarizine Impurity E 56265-29-3 In Stock
Oxcarbazepine
SA12501 11-Keto Oxcarbazepine 537693-29-1
Diclofenac
SA12701 Diclofenac Ethyl Ester 15307-77-4 In Stock
SA12702 Diclofenac Methyl Ester 15307-78-5 In Stock
SA12703 Diclofenac Isopropyl Ester NA In Stock
SA12704 Diclofenac Aldehyde 22121-58-0 2-3 Weeks
SA12705 Diclofenac Carboxylic Acid 13625-57-5 2-3 Weeks
SA12706 Diclofenac Alcohol 27204-57-5 2-3 Weeks
SA12707 Diclofenac Amide 15362-40-0 2-3 Weeks
SA12708 Diclofenac n-Butyl ester NA 2-3 Weeks
Cephalexin
SA12001 7-Aminodesacetoxycephalosporanic acid 22252-43-3 In Stock
SA12002 Cephalexin Impurity E 146794-70-9 In Stock
SA12003 Cephalexin Sulfoxide 56193-21-6 In Stock
SA12004 N-Ethoxycarbonyl-7-ADCA 72820-16-7 In Stock
SA12005 L-Cephalexin 34632-04-7 In Stock
SA12006 Cephalexin Diketopiperazine 59865-11-1
SA12007 Cephalexin Dimer NA In Stock
SA12008
Cephalexin impurity-F (TFA SALT) ,Δ2-
Cephalexin NA In Stock
SA12009 D-Phenylglycyl Cephalexin, (N-Phenylglycyl) 72528-40-6 In Stock
SA12010
D-(-)-2-Phenylglycine Cephalexinate, (C-
Phenylglycyl) TFA Salt NA In Stock
SA12011 C-Phenyl Glycyl Cephalexin Delat-3 NA In Stock
SA12012 Cephalexin impurity D 34876-35-2
SA12013 Cephalexin Ethyl homolog NA In Stock
Quetiapine
SA13001 Quetiapine EP Impurity G 3159-07-7 2-3 Weeks
SA13002 Quetiapine HEEP Impurity 13349-82-1 2-3 Weeks
SA13003 Quetiapine EP Impurity B 5747-48-8 2-3 Weeks
SA13004 Quetiapine N-Oxide 1076199-40-0 2-3 Weeks
SA13005 Quetiapine EP Impurity I 329216-67-3 2-3 Weeks
SA13006 Quetiapine EP Impurity D 945668-94-0 2-3 Weeks
SA13007 Quetiapine EP Impurity A NA 2-3 Weeks
SA13008 Quetiapine EP impurity C NA 2-3 Weeks
SA13009 Quetiapine EP Impurity E 1371638-05-9 2-3 Weeks
Catalog: API Impurities www.synthinkchemicals.com Page 5

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SA13010 Quetiapine EP impurity F NA 2-3 Weeks
SA13011 Quetiapine EP Impurity J 1356906-17-6 2-3 Weeks
SA13012 Quetiapine EP Impurity K NA 2-3 Weeks
SA13013 Quetiapine EP Impurity L NA 2-3 Weeks
SA13014 Quetiapine EP Impurity N NA 2-3 Weeks
SA13015 Quetiapine EP Impurity O NA 2-3 Weeks
SA13016 Quetiapine EP Impurity P NA 2-3 Weeks
SA13017 Quetiapine EP Impurity Q NA 2-3 Weeks
SA13018 Quetiapine EP Impurity R 2459-05-4 2-3 Weeks
SA13019 Quetiapine EP Impurity S 329216-63-9 2-3 Weeks
SA13020 Quetiapine EP Impurity T NA 2-3 Weeks
SA13021 Quetiapine EP Impurity U NA 2-3 Weeks
SA13022 Quetiapine EP Impurity V NA 2-3 Weeks
SA13023 Quetiapine EP Impurity W NA 2-3 Weeks
Ethinyl Estradiol
SA13101 Ethinyl Estradiol EP Impurity B 1231-96-5 2-3 Weeks
SA13102 Ethinyl Estradiol EP Impurity E 27521-34-2 In Stock
SA13103 Ethinyl Estradiol EP Impurity F 56324-28-8 In Stock
SA13104 Ethinyl Estradiol EP Impurity G 38002-18-5 In Stock
SA13105 Ethinyl Estradiol EP Impurity H 1350468-76-6 2-3 Weeks
SA13106 Ethinyl Estradiol EP Impurity I 67703-68-8 In Stock
SA13109 16-Keto-ethynyl estradiol NA 2-3 Weeks
SA13110 6-Keto-18-methyl-17-ethnyl estradiol 38165-80-9 2-3 Weeks
SA13111 6α-Hydroxy-18-methylethnyl estradiol 1175112-25-0 2-3 Weeks
SA13112 6β-Hydroxy-18-methylethnyl estradiol 1175113-26-4 2-3 Weeks
SA13113 δ-6(7)-18-Methylethynyl estradiol 1175128-91-2 2-3 Weeks
SA13114 2-Methyl-17-ethynyl estradiol 3240-39-9 2-3 Weeks
SA13115 (±)-6-Hydroxyethynylestradiol 108646-70-4 2-3 Weeks
SA13116 16β-Hydroxy-17a-ethynylestradiol 10084-25-0 2-3 Weeks
SA13117 17α-Ethynylestradiol 57-63-6 2-3 Weeks
SA13118 Ethynylestradiol 3-sulfate 24560-70-1 2-3 Weeks
SA13119 Ethynylestra-1,3,5(10),6,8-pentaene-3,17-diol 1357266-17-1 2-3 Weeks
Estradiol
SA13201 6α-Hydroxy 17β-Estradiol 1229-24-9 In Stock
SA13202 6β-Hydroxy 17β-Estradiol 3583-03-7 2-3 Weeks
SA13203 6,7-Dehydro Estradiol 7291-41-0 2-3 Weeks
SA13204 ∆9(11)-Estradiol 791-69-5 2-3 Weeks
SA13205 6-Keto 17β-Estradiol 571-92-6 2-3 Weeks
SA13206
(17β)-3,17-Bis[(tetrahydro-2H-pyran-2-yl)oxy]-
estra-1,3,5(10)-trien-6-ol 122566-22-7 2-3 Weeks
SA13207
(17β)-3,17-Bis[(tetrahydro-2H-pyran-2-yl)oxy]-
estra-1,3,5(10)-trien-6-one 53573-82-3 2-3 Weeks
SA13208
(17β)-3,17-Bis[(1-oxopentyl)oxy]-estra-
1,3,5(10)-trien-6-one 1350468-78-8 2-3 Weeks
SA13209 6-Dehydro Estradiol 17-Valerate 1313382-25-0 2-3 Weeks
SA13210 ∆9,11-Dehydro-17β-estradiol 17-Valerate 95959-20-9 2-3 Weeks
SA13211 17β-Estradiol 50-28-2 2-3 Weeks
SA13212 17β-Estradiol Dimethyl Ether 4954-14-7 2-3 Weeks
SA13213 17β-Estradiol Diacetate 3434-88-6 2-3 Weeks
SA13214 Estradiol 3,17-Divalerate 63042-28-4 2-3 Weeks
SA13215 17β-Estradiol 3-O-Sulfate Sodium Salt 4999-79-5 2-3 Weeks
SA13216 2-Methyl-3,17ß-estradiol 1818-12-8 2-3 Weeks
SA13217 6α-Hydroxy estradiol valerate 1313382-26-1 2-3 Weeks
SA13218 6ß-Hydroxy estradiol valerate 1313382-32-9 2-3 Weeks
Catalog: API Impurities www.synthinkchemicals.com Page 6

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SA13219 6-Keto-estradiol valerate 1313382-51-2 2-3 Weeks
SA13220 δ-6(7)-Dehydroestradiol valerate 1313382-25-0 2-3 Weeks
SA13221 δ-9(11)-Propynylestradiol N/A 2-3 Weeks
SA13222 δ-9(11)-Estradiol 791-69-5 2-3 Weeks
SA13223 δ-6(7)-Estradiol 7291-41-0 2-3 Weeks
SA13224 17α-Estradiol 57-91-0 2-3 Weeks
SA13225 17ß-Estradiol sodium sulfate 4999-79-5 2-3 Weeks
SA13226 17α-Estradiol sodium sulfate 56050-04-5 2-3 Weeks
SA13227 17-Methylene-estra-1,3,5(10)-trien-3-ol 34111-53-0 2-3 Weeks
SA13228 16-Ketoestradiol 566-75-6 2-3 Weeks
SA13229 Estradiol-17β-valerate 979-32-8 2-3 Weeks
SA13230 Estradiol-17α-valerate 182624-54-0 2-3 Weeks
SA13231 Estradiol-3-valerate 21881-45-8 2-3 Weeks
SA13232
13-Ethyl-3-methoxygona-1,3,5(10),9(11)-tetraen-
17-one 848-05-5 2-3 Weeks
SA13233 3-Methoxyestra-2,5(10)-dien-17b-ol 1091-93-6 2-3 Weeks
SA13234 3-Methoxyestra-2,5(10)-dien-17-one 17976-32-8 2-3 Weeks
SA13235 6-Keto ethynyl estradiol-3-valerate 2-3 Weeks
SA13236 δ-9(11)-Dehydroestradiol-17b-valerate 95959-20-9 2-3 Weeks
SA13237 δ-9(11)-Dehydroestradiol-3-valerate 2-3 Weeks
SA13238 17β-Estradiol 50-28-2 2-3 Weeks
SA13239 Estradiol-17b-butyrate 18069-79-9 2-3 Weeks
SA13240 13-Ethyl-3-methoxy-gona-1,3,5(10)-trien-17b-ol 848-01-1 2-3 Weeks
SA13241 13-Ethyl-gona-1,3,5(10)-triene-3,17b-diol 6544-69-0 2-3 Weeks
SA13242 Estra-5(10),9(11)-diene-3,17-dione 2-3 Weeks
SA13243 3-Methoxyestra-1,3,5(10),7-tetraen-17b-ol 13587-68-3 2-3 Weeks
SA13244 Estra-1,3,5(10),8-tetraene-3,17α-diol 162707-56-4 2-3 Weeks
SA13245 3-Methoxyestra-1,3,5(10),8-tetraen-17b-ol 2919-30-4 2-3 Weeks
Irgafos168
SA13301 Tris(2,4-di-tert-butylphenyl)phosphate 95906-11-9 In Stock
Norethindrone
SA13401
NORETHINDRONE ACETATE IMPURITY-
B (EP) 19637-28-6 In Stock
SA13402 6 Alpha hydroxy Norethindrone acetate 6856-28-6 2-3 Weeks
SA13403
DELTA-6(7)-NORETHINDRONE ACETATE
(IMPURITY C) 106765-04-2 In Stock
SA13404 6β-Hydroxy Norethindrone Acetate 6856-27-5 2-3 Weeks
SA13405 6-Oxo Norethindrone Acetate 438244-27-0 2-3 Weeks
SA13406 Δ-5(6)-Norethindrone Acetate 1175129-26-6 2-3 Weeks
SA13407 Δ-5(6)-Norethindrone 22933-71-7 2-3 Weeks
SA13408 6 Keto Norethindrone 67696-78-0 2-3 Weeks
SA13409 Norethindrone Impurity A 31528-46-8 In Stock
SA13410 Norethindrone EP Impurity G 38673-36-8 In Stock
SA13411 Norethindrone Impurity E 79727-03-0 In Stock
SA13412 6 α hydroxy Norethindrone 438244-33-8 2-3 Weeks
SA13413 6 ß hydroxy Norethindrone 51724-44-8 2-3 Weeks
SA13414 Norethindrone-3-ethyldienol ether 96487-85-3 2-3 Weeks
SA13415 Norethindrone-3-isopropyldienol ether NA 2-3 Weeks
SA13416 6 Ketonorethindrone 67696-78-0 2-3 Weeks
SA13417 Norethindrone acetate-3-isopropyldienol ether N/A 2-3 Weeks
SA13418 10β-Hydroxynorethindrone 1236-00-6 2-3 Weeks
SA13419 19-Norandrost-4-ene-3,17-dione 734-32-7 2-3 Weeks
SA13420 Norethynodiol 3-monoacetate 2061-45-2 2-3 Weeks
SA13421 Norethindrone acetate 51-98-9 2-3 Weeks
Catalog: API Impurities www.synthinkchemicals.com Page 7

8. (+91) 800 744 7414 Synthink Research Chemicals info@synthinkchemicals.com
SA13422 6ß-Acetoxynorethindrone acetate NA 2-3 Weeks
SA13423 Norethindrone 68-22-4 2-3 Weeks
Cetirizine
SA13501 (R)-1-[(4-Chlorophenyl)phenylmethyl]piperazine300543-56-0 2-3 Weeks
SA13502
(R)-De(carboxymethyl) Cetirizine Ethanol
Dihydrochloride 728948-88-7 2-3 Weeks
SA13503 Cetrizine N-Oxide 1076199-80-8 2-3 Weeks
Trandolapril
SA13601 Trandolapril EP Impurity A 118194-41-5 2-3 Weeks
SA13602 Trandolapril EP Impurity E 87679-71-8 2-3 Weeks
SA13603 Trandolapril EP Impurity B NA 2-3 Weeks
Ganciclovir
SA13701 Ganciclovir 82410-32-0 2-3 Weeks
SA13702 N-Carbobenzyloxy-L-valinyl-ganciclovir 194154-40-0 2-3 Weeks
SA13703 O-Acetyl N-Benzyloxycarbonyl Valganciclovir 194159-22-3 2-3 Weeks
SA13704 N-Acetyl-di-O-acetyl Ganciclovir 86357-14-4 2-3 Weeks
SA13705 Ganciclovir Impurity A NA 2-3 Weeks
SA13706 Ganciclovir Mono-O-acetate 88110-89-8 2-3 Weeks
SA13707 Ganciclovir Impurity B 194159-18-7 2-3 Weeks
SA13708 Iso Ganciclovir 86357-09-7 2-3 Weeks
Valganciclovir
SA13709 Gancyclovir Mono-N-methyl Valinate NA 2-3 Weeks
SA13710 Guanine 73-40-5 2-3 Weeks
SA13711 Ganciclovir 82410-32-0 2-3 Weeks
SA13712 Gancyclovir Mono-N-methyl Valinate NA 2-3 Weeks
SA13713 9-Methoxymethyl Guanine 1202645-50-8 2-3 Weeks
SA13714 Ganciclovir divalinate NA 2-3 Weeks
SA13715 D-Valganciclovir Hydrochloride 1393911-57-3 2-3 Weeks
SA13716 Valganciclovir Hydrochloride 175865-59-5 2-3 Weeks
SA13717 N-Methyl Valganciclovir Hydrochloride 1401562-16-0 2-3 Weeks
Dienogest
SA13801 Dienogest Impurity A NA 2-3 Weeks
SA13802 Dienogest Impurity B NA 2-3 Weeks
SA13803 Dienogest Impurity C 106111-42-6 2-3 Weeks
SA13804 Dienogest Impurity D 190662-30-7 2-3 Weeks
SA13805 Dienogest Impurity E 102193-41-9 2-3 Weeks
SA13806 Dienogest Impurity F NA 2-3 Weeks
SA13807 Dienogest Impurity G 86153-38-0 2-3 Weeks
SA13808 Dienogest Impurity H NA 2-3 Weeks
SA13809 Dienogest Impurity I NA 2-3 Weeks
SA13810 Dienogest Impurity J NA 2-3 Weeks
SA13811 Dienogest Impurity K NA 2-3 Weeks
SA13812 Dienogest Impurity L NA 2-3 Weeks
SA13813 Dienogest Impurity M NA 2-3 Weeks
SA13814 Dienogest 65928-58-7 2-3 Weeks
SA13815
17α-Hydroxy-3-oxo-9-norpregna-5(10),9(11)-
diene-21-nitrile 106111-42-6 2-3 Weeks
SA13816
17α-Cyanomethyl-11b,17b-dihydroxyestra-4,9-
dien-3-one 86153-39-1 2-3 Weeks
Praziquantel
SA13901 Praziquantel Related Compound A 54761-87-4 2-3 Weeks
SA13902 Praziquantel Related Compound B 125273-86-1 2-3 Weeks
SA13903 Praziquantel Related Compound C 125273-88-3 2-3 Weeks
Catalog: API Impurities www.synthinkchemicals.com Page 8

9. (+91) 800 744 7414 Synthink Research Chemicals info@synthinkchemicals.com
SA13904
rac-1,2,3,6,7,11b-Hexahydro-2-[(4-
oxocyclohexyl)carbonyl]-4H-pyrazino[2,1-
a]isoquinolin-4-one 57452-32-1 2-3 Weeks
SA13905 cis-Hydroxy Praziquantel 134924-68-8 2-3 Weeks
SA13906 trans-Hydroxy Praziquantel 134924-71-3 2-3 Weeks
SA13907 rac-Praziquanamine 61196-37-0 2-3 Weeks
SA13908 Praziquantel 55268-74-1 2-3 Weeks
Estradiol Divalerate
Estradiol Valerate Impurity A 50-28-2 2-3 Weeks
SA14002 Estradiol Valerate Impurity B NA 2-3 Weeks
Estradiol Valerate Impurity C 95959-20-9 2-3 Weeks
SA14004 Estradiol Valerate Impurity D NA 2-3 Weeks
Estradiol Valerate Impurity E 63042-28-4 2-3 Weeks
SA14006 Estradiol Valerate Impurity F 18069-79-9 2-3 Weeks
Estradiol Valerate Impurity G 1313382-25-0 In Stock
SA14008 Estradiol Valerate Impurity H 1421283-56-8 2-3 Weeks
SA14009 Estradiol Valerate Impurity I NA 2-3 Weeks
SA14010 Estradiol Valerate Impurity J NA In Stock
SA14011 Estradiol-3,17b-divalerate 63042-28-4 2-3 Weeks
SA14012 δ-6(7)-Dehydroestradiol divalerate N/A 2-3 Weeks
SA14013 6-Keto estradiol-3,17β-divalerate NA 2-3 Weeks
SA14014 6α-Hydroxy estradiol-3,17-divalerate NA 2-3 Weeks
SA14015 δ-9(11)-Dehydroestradiol-3,17b-divalerate NA 2-3 Weeks
Budesonide
SA14101 11-Keto Budesonide 216453-74-6 In Stock
SA14102 Budesonide 21-acetate 51333-05-2 In Stock
SA14103 16α-Hydroxyprednisolone 13951-70-7 2-3 Weeks
SA14104 21-Dehydro Budesonide 85234-63-5 In Stock
SA14105 21-Dehydro-16α-hydroxy Prednisone NA 2-3 Weeks
SA14106 Desonide 638-94-8 2-3 Weeks
SA14107 Budesonide 21-Sulfate NA 2-3 Weeks
SA14108 1,2-Dihydrobudesonide 137174-25-5 2-3 Weeks
SA14109 16α-Butyloxyprednisolone 113930-13-5 2-3 Weeks
SA14110 9,11-Anhydrobudesonide 313474-58-7 2-3 Weeks
SA14111
21-Acetoxy-11-oxo-16α,17α-
propylmethylenedioxpregna-1,4-diene-3,20-
dione NA 2-3 Weeks
SA14112 Budesonide 21-Butyrate NA 2-3 Weeks
SA14113 D-Homobudesonide 1040085-98-0 2-3 Weeks
SA14114
Budesonide Impurity (1, 4-Androstadien-11-
beta-16-alfa-diol-3, 17-dione) 910299-74-0 2-3 Weeks
SA14115 Budesonide-22S 51372-28-2 2-3 Weeks
SA14116 Budesonide-22R 51372-29-3 2-3 Weeks
SA14117 6-Alpha-Hydroxy Budesonide 577777-51-6 2-3 Weeks
SA14118 6-Beta-Hydroxy Budesonide 88411-77-2 2-3 Weeks
SA14119 14,15-Dehydro Budesonide 131918-64-4 2-3 Weeks
SA14120 Desonide-21-Acetate 25092-25-5 2-3 Weeks
SA14121 17-Carboxy Budesonide 192057-49-1 2-3 Weeks
SA14122
(11β,16α)-11-Hydroxy-16-(1-oxobutoxy)-
androsta-1,4-diene-3,17-dione 85234-64-6 2-3 Weeks
SA14123 Budesonide Impurity 1 2-3 Weeks
SA14124 9α-Bromobudesonide 313474-59-8 2-3 Weeks
Difluoroprednisolone
SA14201 6α,​9α-​Difluoroprednisolone 17-Acetate 23674-85-3 2-3 Weeks
Catalog: API Impurities www.synthinkchemicals.com Page 9

10. (+91) 800 744 7414 Synthink Research Chemicals info@synthinkchemicals.com
SA14202 6α,​9α-​Difluoroprednisolone 21-Acetate 52-70-0 2-3 Weeks
SA14203 6α,​9α-​Difluoroprednisolone 21-Butyrate NA 2-3 Weeks
SA14204 6α,​9α-​Difluoroprednisolone 17-Butyrate NA 2-3 Weeks
SA14205 6α,​9α-​Difluoroprednisolone 17, 21-Diacetate NA 2-3 Weeks
SA14206 6-alpha-Fluoro- isoflupredone 806-29-1 2-3 Weeks
SA14207 Dimethoxy difluoroprednisolone NA In Stock
SA14208
6α,9α-Difluoroprednisolone 21-acetate 17-
butyrate 23674-86-4 In Stock
SA14209
6α,9α-Difluoroprednisolone 21-acetate 17-
butyrate -LiOH impurity Not charactarized NA 2-3 Weeks
Estradiol hemihydrate
SA14301 Estradiol hemihydrate Impurity A 53-16-7 2-3 Weeks
SA14302 Estradiol hemihydrate Impurity B 57-91-0 2-3 Weeks
SA14303 Estradiol hemihydrate Impurity C 6171-48-8 2-3 Weeks
SA14304 Estradiol hemihydrate Impurity D 791-69-5 2-3 Weeks
Methyl Prdenisolone
SA14401 6-alpha methylprednisolone
SA14402 Methyl Prednisolone EP Impurity A 91523-05-6 In Stock
SA14403 Methyl Prednisolone EP Impurity C 61919-52-6 In Stock
SA14404 Methyl Prednisolone EP Impurity D 1338549-02-2 In Stock
SA14405 Methylprednisolone EP Impurity B NA 2-3 Weeks
SA14406 Methylprednisolone EP Impurity E NA In Stock
SA14407 Methylprednisolone EP Impurity F NA 2-3 Weeks
SA14408 Methylprednisolone EP Impurity G NA In Stock
SA14409 Methylprednisolone EP Impurity H NA 2-3 Weeks
SA14410 Methylprednisolone EP Impurity J NA In Stock
SA14411 Methylprednisolone EP Impurity K NA In Stock
SA14412 Methylprednisolone EP Impurity L NA In Stock
SA14412 Methylprednisolone 21-Propionate 138804-88-3 In Stock
SA14413 Methylprednisolone Dimer NA
Betamethasone Dipropionate
SA14501 Betamethasone Dipropionate EP Impurity C 75883-07-7 In Stock
SA14502 1,2-Dihydro-Betamethasone 17,21-Dipropionate 80163-83-3 In Stock
SA14503 Betamethasone Dipropionate EP Impurity G 1186048-33-8 In Stock
SA14504 Betamethasone Dipropionate EP Impurity B 5534-13-4 In Stock
SA14505 Betamethasone Dipropionate EP Impurity D 5514-81-8 In Stock
SA14506 Betamethasone Dipropionate EP Impurity A 378-44-9 2-3 Weeks
SA14507 Betamethasone Dipropionate EP Impurity E 5534-09-8 2-3 Weeks
SA14508 Betamethasone Dipropionate EP Impurity H NA In Stock
SA14509 Betamethasone Dipropionate EP Impurity F 66917-44-0 2-3 Weeks
SA14510 Betamethasone 378-44-9 2-3 Weeks
Flurbiprofen
SA14601 Flurbiprofen EP Impurity D 42771-79-9 In Stock
SA14602 Flurbiprofen EP Impurity B 2-3 Weeks
SA14603 Flurbiprofen EP Impurity A 6341-72-6 2-3 Weeks
SA14604 Flurbiprofen EP Impurity C 61466-95-3 2-3 Weeks
SA14605 Flurbiprofen EP Impurity E 137045-30-8 2-3 Weeks
Nebivolol
SA14701 Nebivolol Desfluoro 129101-34-4(Free base) In Stock
SA14702 (2R, 2’S)-6-Fluoro-2-(2’-oxiranyl)chromane 129050-26-6 2-3 Weeks
SA14703 (2S, 2’S)-6-Fluoro-2-(2’-oxiranyl)chromane 129050-23-3 2-3 Weeks
SA14704 rac Nebivolol Hydrochloride 169293-50-9 2-3 Weeks
SA14705 rac N-Benzyl Nebivolol 929706-85-4 2-3 Weeks
SA14706 Didefluoro Nebivolol 129101-33-3 2-3 Weeks
Catalog: API Impurities www.synthinkchemicals.com Page 10

11. (+91) 800 744 7414 Synthink Research Chemicals info@synthinkchemicals.com
SA14707 N-Benzyl Nebivolol (Mixture of diasteromers) NA In Stock
Ezetimibe
SA14801 Ezetimibe Tetrahydropyran Impurity 1296129-15-1 In Stock
SA14802 (3’R)-Ezetimibe 163380-16-3 In Stock
SA14803 Ezetimibe Ketone 191330-56-0 In Stock
SA14804 Ezetimibe Diacid Impurity 1013025-04-1 2-3 Weeks
SA14805 Desfluoro Ezetimibe 302781-98-2 In Stock
SA14806 4’-O-Benzyloxy Ezetimibe 163222-32-0 In Stock
SA14807 Ezetimibe Diacetate 163380-20-9 In Stock
SA14808 (3’S,3R,4S)-Desfluoro Ezetimibe 190595-66-5 2-3 Weeks
SA14809 Ezetimibe (3R,4R,3'R)-isomer NA In Stock
SA14810 Ezetimibe (3S,4S,3'S)-isomer NA In Stock
SA14811 3’-(2-Fluorophenyl) Ezetimibe In Stock
SA14812 ent-Ezetimibe 1376614-99-1 In Stock
SA14813 3-O-Acetyl Ezetimibe 1044664-24-5 2-3 Weeks
SA14814 (3’S)-ent-Ezetimibe NA In Stock
SA14815 Ezetimibe Diol 1374250-08-4 2-3 Weeks
SA14816 Benzyl Ezetimibe Diol NA 2-3 Weeks
SA14817 Ezetimibe Lactam Cleaved Alcohol NA 2-3 Weeks
SA14818 Ezetimibe m-fluoro aniline analog NA 2-3 Weeks
SA14819 Ezetimibe desfluoro methyl impurity NA In Stock
SA14820 Ezetimibe desfluoro chloro impurity NA In Stock
Canagliflozin
SA14901 Canagliflozin Defluoro Impurity NA
SA14902 Canagliflozin alpha-Isomer Impurity NA
SA14903 (R)-Cangliflozin Furanose impurity NA
SA14904 (S)-Canagliflozin Furanose Impurity NA
SA14905 Cangliflozin Enantiomer impurity NA
SA14906 Cangliflozin Dimer impurity NA
SA14907 Canagliflozin Dimer Impurity 1 NA
SA14908 Cangliflozin Ring opening impurity NA
SA14909 Tetra acetyl Canagliflozin NA
SA14910 Tetra Acetyl CNG-II NA
SA14911 Canagliflozin Furanose Impurity NA
SA14912 Canagliflozin Monoacetyl Impurity NA
SA14913 Canagliflozin Related Impurity 1 NA
SA14914 Canagliflozin Related Impurity 2 NA
SA14915 Canagliflozin Related Impurity 3 NA
Dapagliflozin
SA15001 Dapagliflozin alfa-Isomer NA
SA15002 Dapagliflozin Impurity 1 NA
SA15003 Dapagliflozin Impurity 2 NA
SA15004 Dapagliflozin Impurity 3 NA
SA15005 Dapagliflozin Impurity 4 NA
SA15006 Dapagliflozin Impurity 5 NA
SA15007 Dapagliflozin Impurity 6 NA
SA15008 Dapagliflozin Impurity 7 NA
SA15009 Dapagliflozin Impurity 8 NA
SA15010 Dapagliflozin 461432-26-8
Empagliflozin
SA15101 Empagliflozin Impurity A NA
SA15102 Empagliflozin Impurity B NA
SA15103 Empagliflozin Impurity C NA
SA15104 Empagliflozin Impurity D NA
Catalog: API Impurities www.synthinkchemicals.com Page 11

12. (+91) 800 744 7414 Synthink Research Chemicals info@synthinkchemicals.com
SA15105 Empagliflozin Dimer Impurity NA
SA15106 (S, R)-Empagliflozin Impurity NA
SA15107 (S, S)-Empagliflozin Impurity NA
SA15108 Empagliflozin Sugar Dimer Impurity NA
SA15109 Empagliflozin Sugar Dimer Impurity 1 NA
SA15110 (S)-Empagliflozin Peracetyl Impurity NA
SA15111 Empagliflozin Impurity 3 NA
SA15112 Empagliflozin Impurity 4 NA
SA15113 Empagliflozin MonoAcetyl Impurity NA
SA15114 Empagliflozin Impurity 5 NA
Hydrocortisone
SA15201 Hydrocortisone 21-Butyrate 6677-99-2
SA15202 Hydrocortisone EP Impurity A 50-24-8
SA15203 Hydrocortisone EP Impurity B 53-06-5
SA15204 Hydrocortisone EP Impurity C 50-03-3
SA15205 Hydrocortisone EP Impurity D 53-35-0
SA15206 Hydrocortisone EP Impurity E 600-99-7
SA15207 Hydrocortisone EP Impurity F 152-58-9
SA15208 Hydrocortisone EP Impurity G 14760-49-7
SA15209 Hydrocortisone EP Impurity H NA
SA15210 17α-Hydroxy-11-deoxycorticosterone-21-acetate 640-87-9
SA15211 Hydrocortisone Impurity L NA
SA15212 11-Epihydrocortisone 566-35-8
SA15213 6-Dehydrocortisol Acetate 21940-45-4
SA15214 21-Deoxy Cortisone 1882-82-2
SA15215 6-beta-Hydroxycortisol Sulfate 53587-06-7
SA15216 Hydrocortisone 17-Butyrate 3-Enol Methyl Ether NA In Stock
Amoxicillin
SA15301 Amoxicilloic acid-1 Impurity NA
SA15302 Amoxicilloic acid-2 Impurity NA
SA15303 Amoxilloic acid-1 Impurity NA
SA15304 Amoxilloic acid-2 Impurity NA
SA15305 Diketopiperazine -1 Impurity NA
SA15306 Diketopiperazine -2 Impurity NA
SA15307 Amoxicillin Dimer impurity NA
SA15308 Amoxicillin Trimer Impurity NA
SA15309 L-Amoxicillin Impuity NA
Sofosbuvir
SA15401 Sofosbuvir 1190307-88-0 In Stock
SA15402 Sofosbuvir α-isomer NA In Stock
SA15403 2-R -Methyl Sofosbuvir NA 2-3 Weeks
SA15404 O-Desphenyl sofosbuvir NA 2-3 Weeks
SA15405 RP-isomer of sofosbuvir NA 2-3 Weeks
SA15406 2'-S -Fluoro sofosbuvir NA In Stock
SA15407 Sofosbuvir 3',5'-Bis-O-Phosphoramidate 1337482-17-3 2-3 Weeks
SA15408 Sofosbuvir 3'-O-Phosphoramidate 1337482-15-1
SA15409 2'-Hydroxy Sofosbuvir NA In Stock
SA15410 2'-Keto Sofosbuvir NA 2-3 Weeks
SA15411 2'-Alkene Sofosbuvir NA
SA15412 Sofosbuvir Impurity SA15412 863329-62-8
SA15413 Sofosbuvir Impurity SA15413 863329-63-9
SA15414 Sofosbuvir Impurity SA15414 NA
SA15415 Sofosbuvir Impurity SA15415 94447-44-2
SA15416 Sofosbuvir Impurity SA15416 NA
Catalog: API Impurities www.synthinkchemicals.com Page 12

13. (+91) 800 744 7414 Synthink Research Chemicals info@synthinkchemicals.com
SA15417 Sofosbuvir Impurity SA15417 NA
SA15418 Sofosbuvir Impurity SA15418 114262-49-6
SA15419 Sofosbuvir Impurity SA15419 NA
SA15420 Sofosbuvir Impurity SA15420 NA
SA15421 Sofosbuvir Impurity SA15421 NA
SA15422 Sofosbuvir Impurity SA15422 NA
SA15423 Sofosbuvir Impurity SA15423 NA
SA15424 Sofosbuvir Impurity SA15424 NA
SA15425 Sofosbuvir Impurity SA15425 NA
SA15426 Sofosbuvir Impurity SA15426 NA
SA15427 Sofosbuvir Impurity SA15427 NA
SA15428 Sofosbuvir Impurity SA15428 NA
SA15429 Sofosbuvir Impurity SA15429 NA
SA15430 Sofosbuvir Impurity SA15430 NA
Dexamethasone
SA15501 Dexamethasone 50-02-2 2-3 Weeks
SA15502 17β-Carboxy-17-desoxy Dexamethasone 75262-69-0 In Stock
SA15503 6β-Hydroxy Dexamethasone 55879-47-5 2-3 Weeks
SA15504 Dexamethasone-∆17,20 21-Aldehyde 6762-51-2 In Stock
SA15505 21-Dehydro Dexamethasone Hydrate 2964-79-6 2-3 Weeks
SA15506 Dexamethasone Acid 37927-01-8
SA15507 21-Hemiacetal Dexamethasone 473273-03-9
SA15508 Desoxymetasone 382-67-2 In Stock
SA15509 Dexamethasone 9,11-Epoxide 24916-90-3 2-3 Weeks
SA15510 Dexamethasone Impurity J 2036-77-3
SA15511 Dexamethasone Impurity K NA
SA15512 17β-Carboxy-17α-formyloxy Dexamethasone 473273-04-0
SA15513 17-Oxo Dexamethasone 1880-61-1 In Stock
Beclomethasone Dipropionate
SA15601 Beclomethasone Dipropionate #5534-09-8
SA15602 Beclomethasone 21-Propionate 69224-79-9
SA15603 Beclomethasone 17-Propionate 5534-18-9
SA15604 Beclomethasone NA
SA15605
9-Deschloro-9-bromo Beclomethasone
Dipropionate 52092-14-5
SA15606 1,2-Dihydro Beclomethasone Dipropionate 114371-33-4
SA15607
1,2-Dihydro-6,7-dehydrobeclometasone
Dipropopionate NA
SA15608 2-Bromo Beclomethasone Dipropionate 1204582-47-7
SA15609 6α-Bromo Beclomethasone Dipropionate 887130-69-0
SA15610 Beclomethasone 21-Acetate 17-Propionate #5534-08-7
SA15611 Beclomethasone 21-Butyrate 17-Propionate NA
SA15612 Betamethasone 9,11-Epoxide 21-Propionate 205105-83-5
SA15613 6α-Chlorobeclomethasone Dipropionate 887130-68-9
SA15614 Beclomethasone Dipropinate Impurity I NA
SA15615
Betamethasone 9,11-Epoxide 17,21-
Dipropionate 66917-44-0
SA15616
9,11β-Dichloro-17,21-dihydroxy-16β-methyl-
pregna-1,4-diene-3,20-dione Dipropionate NA
SA15617
17,21-Dihydroxy-16β-methylpregna-1,4-diene-
3,20-dione Dipropionate NA
SA15618 Beclomethasone Dipropinate Impurity R NA
SA15619 Beclomethasone 11,17,21-Tripropionate NA
SA15620 Betamethasone 9,11-Epoxide 17-Propionate 79578-39-5
Catalog: API Impurities www.synthinkchemicals.com Page 13

14. (+91) 800 744 7414 Synthink Research Chemicals info@synthinkchemicals.com
Levonorgestrel
SA15701 δ-6(7)-Levonorgestrel 51087-61-7
SA15702 6α-Hydroxylevonorgestrel 87585-03-3
SA15703 6β-Hydroxylevonorgestrel 55555-97-0
SA15704 (±)6-Hydroxylevonorgestrel 40915-05-7
SA15705 6-Ketolevonorgestrel 1175109-63-3
SA15706 Levonorgestrel-3-ethyldienol ether 24908-87-0
SA15707 Levonorgestrel-3-isopropyldienol ether NA
SA15708 δ-5(6)-Levonorgestrel 100021-05-4
SA15709 δ-5(6)-Dihydrolevonorgestrel acetate 1175110-92-5
SA15710 18-Methylestr-4-ene-3,17-dione 21800-83-9
SA15711 18-Methylnandrolone 793-55-5
SA15712 δ-5(10)-8α-Levonorgestrel 5772-36-1
SA15713 δ-8(14)-Levonorgestrel 110785-09-6
SA15714 Levonorgestrel-3-methyldienol ether 176254-10-7
SA15715 δ-5(10)-8ß-Levonorgestrel 19914-67-1
SA15716
13-Ethyl-3-ethynyl-18,19-dinor-17a-pregna-3,5-
dien-20-yn-17-ol NA
SA15717 δ-5(10)-Levodione 4222-96-2
SA15718 10ß-Hydroxylevonorgestrel 20402-62-4
SA15719 Methoxydienone 2322-77-2
SA15720 13-Ethyl-3-methoxygona-2,5(10)-dien-17ß-ol 1038-28-4
SA15721
13-Ethyl-3-methoxy-18,19-dinorpregna-2,5(10)-
dien-20-yn-17-ol 799-43-9
SA15722 Levonorgestrel acetate NA
SA15723 E/Z-17-Deacetylnorgestimate 53016-31-2
SA15724 Levonorgestrel 797-63-7
SA15725 4,5-Didehydrolevonorgestrel 78088-19-4
SA15726 18-Methyl mestranol 14009-70-2
19-Norandrostenedione
SA15801 10β-Hydroxy-19-norandrostene-3,17-dione 5189-96-8
SA15802 Norandrostenedione-3-ethyldienol ether 2863-88-9
Norgestimate
SA15901 syn/anti-6β-Hydroxynorgestimate 108434-19-1
SA15902 E-17-Deacetylnorgestimate 74183-55-4
SA15903 Z-17-Deacetylnorgestimate 74183-54-3
SA15904 Norgestimate 35189-28-7
Estrone
SA16001 δ-8(9)-Dehydroestrone Sodium Sulfate 61612-83-7
SA16002 δ-9(11)-Estrone sulfate piperazine salt 1313382-30-7
SA16003 δ-8(9)-Dehydroestrone 474-87-3
SA16004 δ-9(11)-Dehydroestrone 1089-80-1
SA16005 6α-Hydroxyestrone 1476-78-4
SA16006 6β-Hydroxyestrone 1229-25-0
SA16007 2-Methylestrone
SA16008 δ-9(11)-18-Methyl estrone 19882-81-6
SA16009 6-Keto estrone 1476-34-2
SA16010 Estrone sodium sulfate 438-67-5
SA16011
Estra-5(10),9(11)-diene-3,17-dione-3-ethylene
Ketal 5571-36-8
SA16012 δ-6(7)-Estrone 2208-12-0
SA16012 Ethylmetrienone 848-04-4
Estriol
SA16101 16,17-epi-Estriol 793-89-5
Catalog: API Impurities www.synthinkchemicals.com Page 14

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Testosterone
SA16201 Prenotestosterone 1089-78-7
SA16202 Androst-4-ene-3,17-dione 63-05-8
Nandrolone
SA16301 6ß-Hydroxynandrolone 4146-29-6
SA16302 6α-Hydroxynandrolone 692731-75-2
SA16303 6-Ketonandrolone 1175130-27-4
SA16304 δ-6(7)-Nandrolone 14531-84-1
SA16305 6ß-Hydroxynandrolone acetate 13573-37-0
SA16306 Nandrolone phenylpropionate 62-90-8
Equilin
SA16401 Equilin sodium sulfate 16680-47-0
SA16402 17ß-Dihydroequilin sodium sulfate 16680-49-2
SA16403 17α-Dihydroequilin sodium sulfate 56050-05-6
SA16404 Equilenin sodium sulfate 16680-48-1
SA16405 17ß-Dihydroequilenin sodium sulfate 16680-50-5
SA16406 17α-Dihydroequilenin sodium sulfate 56086-66-9
SA16407 Equilenin 517-09-9
SA16408 17ß-Dihydroequilenin 1423-97-8
SA16409 17a-Dihydroequilenin 6639-99-2
SA16410 17ß-Dihydroequilin 3563-27-7
SA16411 17α-Dihydroequilin 651-55-8
Desogestrel
SA16501 3-Hydroxydesogestrel 869627-85-0
SA16502 3α-Hydroxydesogestrel 70805-84-4
SA16503 3β-Hydroxydesogestrel 70805-85-5
SA16504
13-Ethyl-17β-hydroxy-11-methylene-gon-4-en-3-
one 1188271-71-7
Exemestane
SA16601 6-Methyleneandrost-4-en-3,17-dione 19457-55-7
SA16602
6β-Hydroxymethylandrosta-1,4-diene-3,17-
dione 121021-51-0
SA16603 Androstane-1,4-diene-3,17-dione 897-06-3
SA16604 17β-Hydroexemestane 122370-91-6
Prednisolone
SA16701 Prednisolone 50-24-8
SA16702 Prednisolone-17-ethylcarbonate 104286-02-4
SA16703 Prednisolone-21-propanoate 5740-62-5
SA16704 Prednisolone-21-ethylcarbonate 2205-88-1
SA16705 4Prednisolone-21-acetate-17-ethylcarbonate 671225-23-3
SA16706
11β-Hydroxy-3,20-dioxopregn-4-ene-17,21-diyl-
17- NA
Norgestrel
SA16801 Norgestrel 6533-00-2
Etynodiol
SA16901 Etynodiol 1231-93-2
Citalopram NA
SA17001 Desfluoro Citalopram Oxalate 1093072-86-6 In Stock
Clobetasol Propionate
NA Clobetasol Propionate A In Stock
NA Clobetasol Propionate C In Stock
NA Clobetasol Propionate D In Stock
Catalog: API Impurities www.synthinkchemicals.com Page 15