Derwent Chemistry Resource vs. CAS Registry课件.ppt

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DCR Indexing Policy Source: DCR FAQ Compounds selected relating to the inventive feature of patent Up to 50 structures per patent included compound limits being phased out Does not include sequences - these are in GeneSeq (DGENE on STN) Markush structures are in MMS on Questel. MMS also contains specific compounds in DCR, called SCN’s. 精品文档 DCR Usability Uses standard STN Express searching (also STN on the Web, online structure commands) Only full file searching is provided - no sample search available Moving AN’s between bibliographic to structure segments is clunky 精品文档 Comparison - More Hits Retrieved in Reg 精品文档 Comparison cont’d 精品文档 Unique Hits in DCR Search identical structure query in WPIDS and Reg Select documents from WPIDS and CA Use Duplicate Remove command to identify unique documents As rule, unique documents are found by doing this Some non-overlap due to extended families split differently. 精品文档 FILE WPIDS ENTERED AT 09:42:49 ON 13 MAR 2001 L1 STRUCTURE UPLOADED L2 291 S L1 L3 43 S L2/DCR FILE REGISTRY ENTERED AT 10:25:03 ON 13 MAR 2001 L6 21292 S L1 SSS FULL FILE HCAPLUS ENTERED AT 10:25:35 ON 13 MAR 2001 L7 4707 S L6 L8 868 S L7 AND P/DT SET DUPORDER FILE FILE WPIDS, HCAPLUS ENTERED AT 10:28:15 ON 13 MAR 2001 L9 878 DUP REM L3 L8 (33 DUPLICATES REMOVED) Search Strategy for Finding Unique DCR Patents i.e., 10 unique hits from DCR search not found by a structure search in CA/Reg 精品文档 Sartan Query Results: WPIDS: 62 Structures, 38 Abstracts Registry: 8559 Structures, 475 patent hits in CAplus Duplicate Remove: 29 duplicates, 9 unique hits in WPIDS 精品文档 Sartan Query Unique hit to WPIDS: ACCESSION NUMBER: 1999-494073 [41] WPIDS TITLE: Preparation of N-substituted heterocyclic derivatives useful as intermediates for angiotensin II antagonists. PATENT ASSIGNEE(S): (BRIM) BRISTOL-MYERS SQUIBB CO WO 9938847 A1

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