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