The American Chemical Society (ACS) is the world’s largest scientific society and one of the world’s leading sources of authoritative scientific information. A nonprofit organization, chartered by Congress, ACS is at the forefront of the evolving worldwide chemical enterprise and the premier professional home for chemists, chemical engineers and related professions around the globe.
The American Association for Clinical Chemistry (AACC) is an international society comprised of medical professionals with an interest in clinical chemistry, clinical laboratory science, and laboratory medicine.
The CADD Group's Chemoinformatics Tools and User Services is the public web server of the Computer-Aided Drug Design (CADD) Group of the Chemical Biology Laboratory (CBL), NCI, NIH. The purpose of this service is to provide structures, data, tools, programs and other useful information to the public.