THE CHEMICAL ABSTRACTS SERVICE GENERIC CHEMICAL (MARKUSH) STRUCTURE STORAGE AND RETRIEVAL CAPABILITY .2. THE MARPAT FILE

The MARPAT File is a structure-searchable database containing Markush structures found in patents abstracted in Chemical Abstracts. The file was introduced in late 1989 on STN International, the Scientific and Technical Information Network, and access was extended gradually during 1990 concurrent with implementation of service and support enhancements. The file became available to all STN accounts on September 30, 1990. The MARPAT File offers online access via structure-based queries to the generic substance representations found in the chemical patent literature. A single query language is used to build structure queries that are searchable in any STN structure file. A unique capability permits searcher-specified cross-matching of specific query nodes with generic nodes included in the MARPAT File structures.