Doxycycline Impurities Manufacturer and suppliers in India - Hemarsh Technologies was established in 2008 and since then our company has enjoyed a rapid growth. Our prime focus is on contract research and impurities synthesis for pharmaceutical industries.

1. Doxycycline EP Impurity A
Doxycycline EP Impurity B
CAS No: 444.43 ; 480.90 ;
Mol. Wt: 3219-99-6 (base) ; 41411-66-9 (HCl) ;
Other Technical Details: Doxycycline USP RC A ; 6-
Epi Doxycycline ; (4S,4aR,5S,5aR,6S,12aS)-4-
(Dimethylamino)-3,5,10,12,12a-pentahydroxy-6-
methyl-1,11-dioxo-1,4,4a,5,5a,6,11,12a-
octahydrotetracene-2-carboxamide ;
Molecular Formula: C22H24N2O8 (base) ;
C22H25ClN2O8 (HCl salt) ;
CAS No: 442.42 ; 478.88 ;
Mol. Wt: 914-00-1 (base) ; 3963-95-9 (HCl) ;
Other Technical Details: Methacycline HCl ;
(4S,4aR,5S,5aR,12aS)-4-(Dimethylamino)-
3,5,10,12,12a-pentahydroxy-6-methylene-1,11-
dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-
carboxamide HCl ;
Molecular Formula: C22H22N2O8 (base) ;
C22H23ClN2O8 (base) ;
DOXYCYCLINE IMPURITY
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2. Doxycycline EP Impurity C
Doxycycline EP Impurity D
CAS No: 444.43 ;
Mol. Wt: 6543-77-7 ;
Other Technical Details: 4-Epi Doxycycline ;
(4R,4aR,5S,5aR,6R,12aS)-4-(Dimethylamino)-
3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-
1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-
carboxamide ;
Molecular Formula: C22H24N2O8 ;
CAS No: 444.43 ;
Mol. Wt: 97583-08-9 ;
Other Technical Details: 4-Epi 6-Epi Doxycycline ;
(4R,4aR,5S,5aR,6S,12aS)-4-(Dimethylamino)-
3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-
1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-
carboxamide ;
Molecular Formula: C22H24N2O8 ;
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3. Doxycycline EP Impurity E
Doxycycline EP Impurity F
CAS No: 460.43 ;
Mol. Wt: 79-57-2 ; 6153-64-6 (Dihydrate) ;
Other Technical Details: Oxytetracycline ;
(4S,4aR,5S,5aR,6S,12aS) -4-(dimethylamino)-
3,5,6,10,11,12a-hexahydroxy -6-methyl-1,12-
dioxo-1,4,4a,5,5a,6,12,12a-octahydrotetracene -
2-carboxamide ;
Molecular Formula: C22H24N2O9 ;
CAS No: 443.45 ;
Mol. Wt: 6542-44-5 ;
Other Technical Details: 2-Acetyl-2-Decarbamoyl
Doxycycline ; (4S,4aR,5S,5aR,6R,12aS)-2-Acetyl-4-
(dimethylamino)-3,5,10,12,12a-pentahydroxy-6-
methyl-4a,5a,6,12a-tetrahydrotetracene-
1,11(4H,5H)-dione ;
Molecular Formula: C23H25NO8 ;;
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