Comprehensive database of chemical literature covering chemical substances and reactions, chemical catalogs and regulatory information from databases produced by Chemical Abstracts Service and the National Library Of Medicine. Subject coverage includes chemistry and related disciplines, such as biomedicine, chemical engineering, materials science, and agriculture. Users may search by topic, author, chemical name or formula, CAS registry number, structure, and reaction information. CAS SciFinder-n requires you to login with your own SciFinder-n username and password; if you have not already registered, follow this link to set up your account. After setting up an account, be sure to choose CAS SciFinder-n on the drop down menu.