CAS

Chemical Abstracts Service, a division of the American Chemical Society; CAS is an abstracting and indexing service for the scientific literature on chemistry.

CAS Registry Number

an identification number assigned by CAS to each unique chemical entity

CCRIS

Chemical Carcinogenesis Research Information System, a factual online database (available on MEDLARS through TOXNET) sponsored by NCI containing scientifically evaluated data derived from carcinogenicity, mutagenicity, tumor promotion, and tumor inhibition tests

CDC

Centers for Disease Control and Prevention

CD-ROM

compact disk read-only memory

CERCLA

Comprehensive Environmental Response, Compensation, and Liability Act of 1980, also known as the Super-fund Act

ChemID

Chemical Identification, a nonroyalty chemical nomenclature and dictionary online database (available on MEDLARS) containing information on more than 294,000 chemical substances

CHEMLEARN

a computer-based tutorial, developed by SIS, to teach librarians, information specialists, and scientists how to effectively search ChemID and CHEMLINE

CHEMLINE

Chemical Dictionary Online, a royalty chemical nomenclature and dictionary online database (available on MEDLARS) containing information on more than 1.4 million chemical substances

CRISP

Computer Retrieval of Information on Scientific Projects, an online database providing information on NIH-funded research grants



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