1. Easily locate the chemical compounds indexed in
Derwent World Patents Index®
Chemistry Resource is the ideal database for finding specific chemical
compounds within Derwent World Patents Index records.
It offers simple, easy access to the Derwent World Patents Index bibliographic
database and enables retrieval of Derwent World Patents Index bibliographic
documents back to 1981. For further information on searching the Derwent
World Patents Index backfile by structure, we link to:
www.stn-international.de/archive/stnews/news0602.pdf. Chemistry Resource
is available in the following STN files: WPINDEX, WPIDS, and WPIX.
Before running an actual search, Chemistry Resource allows users to conduct
a sample search at no cost to estimate the number of hits they will get from
the search.
Chemistry Resource numbers, which are unique identifiers for specific chemical
compounds, form the link between Chemistry Resource and the corresponding
bibliographic indexing in Derwent WPI. The numbers comprise a system of
identifiers, as shown on the back of this sheet.
An example of how the crossover between Derwent WPI and Chemistry Resource
works is also shown on the back.
Chemistry Resource on STN offers many useful text search fields, including
Systematic Name, Preferred Name and Molecular Weight. Each search code
and its field description are listed on the back, together with the different
display formats.
Chemistry Resource
=> s trypan blue/cn
L34 1 TRYPAN BLUE/CN
=> d 134 max
L34 ANSWER 1 OF 1 WPIX (C) 2003 THOMSON DERWENT
AN.S DCR-130032
DCSE 130032-0-0-0
CN.P CONGO-BLUE
SY CONGO BLUE; NIAGARA BLUE; TRYPAN BLUE
CM 1
Na
CM 2
MF C34 H28 N6 O14 S4 . Na
SMF C34 H28 N6 O14 S4 *1; Na *1; TOTAL *2; TYPE *2
MW 895.8772
SDCN R04148
SMIL[Na+].Cc1cc (ccc1N=Nc2c (O)c3c (N) cc (cc3cc2S (=O) (=O)O) S (=O) (=O) O) c4c
cc(N=Nc5c (O) c6c (N) cc (cc6cc5S (=O) (=O) O) S (=O) (=O) O) c (C) c4
ISMI[Na+].Cc1cc (ccc1N=Nc2c (O) c3c (N) cc (cc3cc2S (=O) (=O) O) S (=O) (=O) O) c4c
cc (N=Nc5c (O) c6c (N) cc (cc6cc5S (=O) (=O) O) S (=O) (=O) O) c (C) c4
=> s 134/dcr
L35 8 L34/DCR
O
N
N
S
S
N
O
O
O
O
O
O
N
N
S
O
O
O
O
N
S
O
O
O
An example of a
Chemistry Resource
record
For further information,
please visit
www.thomsonderwent.com
or email:
custserv@derwent.co.uk
Chemistry Resource FS 1/15/04 12:42 PM Page 1

2. Fields shown in the example: DCR – Derwent World Patents Index crossover field for
Chemistry Resource accession numbers:
CN – Derwent Chemistry Resource field for Chemical Name
(equivalent to searching CN.P and SY)
*Chemistry Resource numbers (DCSE field)
The structure of Chemistry Resource numbers is as follows: 00000000-00-00-00
00000000 1- to 8-figure sequential number (allows up to 100 million compounds)
00 First suffix for stereoisomers (number from 1-99)
00 Second suffix for salts (number from 1-99)
00 Third suffix to deal with other cases, such as physical forms, isotopes,
tautomers, etc. (number from 1-99)
(Note: numbers are not being filled out with leading "0"s, so they will start
with 1-0-0-0, etc.)
© 2003 Thomson Derwent 1/04 CLS/3614
Chemistry Resource field codes and descriptions
Search/Display field Description
AN.S Chemistry Resource Accession Number, Chemistry Resource Segment
CC Classification Code (Substance Descriptor)
CMF Component Molecular Formula
CN Chemical Name (equivalent to searching CN.P and SY)
CN.P Chemical Name, Preferred
CN.S Chemical Name, Systematic
CNS Chemical Name Segment (from CN.P, CN.S, SY)
DCSE* Chemistry Resource Number, Chemistry Resource Segment
EDCR Entry Date Derwent Chemistry Resource
ELS Element Symbol
ELS.CNT Element Symbol, Count
MF Molecular Formula
MW Molecular Weight
NC Number of Components
NFRAG Number of Fragments
SDCN Derwent Compound Number, Chemistry Resource Segment
SDRN Derwent Registry Number, Chemistry Resource Segment
SMF Standardized Molecular Formula
SRIN Ring Index Number, Chemistry Resource Segment
SY Synonym Name
UPCR Update Date Chemistry Resource
UPWX Update Date Derwent World Patents Index Cross Reference
Chemistry Resource display formats
SCAN CN.P, CN.S, MF, STR.
TRIAL AN.S, CN.P, CN.S, MF, STR.
STD (Default Display) AN.S, DCSE, CN.P, CN.S, SY, STR, CMT, MF.
ISTD AN.S, DCSE, CN.P, CN.S, SY, STR, CMT, MF.
(Indented and formatted version)
ALL AN.S, DCSE, CN.P, CN.S, SY, STR, CMT, MF, SMF, MW, SRIN,
(MAX) SDCN, SDRN, SMIL, ISMI.
IALL AN.S, DCSE, CN.P, CN.S, SY, STR, CMT, MF, SMF, MW, SRIN,
SDCN, SDRN, SMIL, ISMI. (Indented and formatted version)
The crossover between Chemistry Resource and Derwent WPI segments
=> s azoxystrobin/cn
L38 1 AZOXYSTROBIN/CN compound record in Chemistry Resource
=> s l38/dcr
L39 67 L38/DCR corresponding Derwent WPI record
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Chemistry Resource FS 1/15/04 12:42 PM Page 2