The CD-ROM contains over 10,000 entries detailing chemicals, drugs, and biologicals, each describing a single substance or small group of related compounds. Users can access data with a choice of search options, including drawing the structure of interest and then searching for it. Text searching is possible for every field of the chemical, common, generic and brand names; molecular weights and formulae; physical and toxicity data; and citations to the scientific and patent literature. Annotation c. by Book News, Inc., Portland, Or.