PIUG 2023 - MONDAY

M O N D A Y A F T E R N O O N

Advanced Search Techniques in the CAS MARPAT Markush Chemical Structure Database

David Saari (CAS) 3:20 – 3:50 pm

ABSTRACT Advanced search techniques in the CAS Markush collection can be used to improve search precision, enhance search efficiency, or overcome limits built into the search system. These techniques apply to the MARPAT database on STNext®. Examples of advanced techniques to increase precision include subset searching, especially sequential subset searches with multiple query structures. Search failures from “query structure too complicated” sometimes can be elimi nated, and poor quality results having too many “it eration incomplete” answers can be improved (often significantly). A search in different Markush structure records (MSTR) can be used to identify patent docu ments indexed for related compounds like a starting material or intermediate and a separate reaction product. Match level can be used to expand or focus search results. The order of execution of subset searches can impact search quality (“iteration incom pletes”) and hit highlighting in the final answer.

BIOGRAPHY David Saari is an original member of PIUG. Current ly, he is a Senior Scientist in CAS IP Services, CAS, a division of the American Chemical Society. David is registered to practice as an Agent with the U.S. Patent and Trademark Office.

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