An encyclopedia of chemicals, drugs and biologicals, containing "more than 2,500 pages with 10,200 monographs, each describing a single substance or small groups of related compounds. The reference features chemical and brand names, molecular weights and formulas, citations to scientific literature, depictions of structures, physical and toxicity data, details on commercial and therapeutic uses, and up-to-date U.S. regulatory information on carcinogens and controlled substances."