“…These are the compounds that are covered in Current Abstracts of Chemistry and Index Chemicuss and the Index Chemicus Registry System (ICRS). 6 We have previously reported some results obtained by using WLN-FRAGEN against one year (1977) of this file,' in which a total of 167,663 organic compounds produced 747,412 fragments -21,464 of which were unique. For this study, we compared those results with the CIMI-DRUGFILE results.…”