CAS SciFinder This link opens in a new windowCAS SciFinder is the latest scientific information solution from CAS, a division of the American Chemical Society. In addition to reference, substance, reaction and supplier content, CAS SciFinder® includes relevance-ranked results, step-by-step procedures and protocols, citation mapping, biosequence searching, retrosynthetic analysis, patent landscape mapping, touch-screen enabled structure drawing and much more—all accessible in a simple, easy-to-use interface.