SciFinder-n (Existing Account) This link opens in a new windowUse this link to log-in to your existing Scifinder-n account. "CAS 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 CAS SciFinder®, CAS SciFinder-n 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."