title: CHEMFILE: an in-house information system for the chemical indexing of Abstracts on Health Effects of Environmental Pollutants (HEEP).
abstract: The inclusion of a Chemical Abstracts Service (CAS) Registry Number index in HEEP has led to the need for a special database designed to link substance names with their appropriate CAS chemical compound Registry Numbers. Begun in 1968 as a tape record with batch mode updates and few record modification capabilities, the information system, which we call CHEMFILE, has evolved to its current form of disk storage with on-line access for file maintenance.
mesh_terms: D000043:Abstracting and Indexing; D055598:Chemical Phenomena; D002621:Chemistry; D004785:Environmental Pollutants / Q000009:adverse effects*; D006801:Humans; D007256:Information Systems; D009862:Online Systems
chemical_list: D004785:Environmental Pollutants