These tools enable searching by chemical name, CAS Registry Number, formula, and other characteristics. Some enable searching by drawing chemical structures and can be good sources of structural images.
Interactive database covering physical, thermophysical, thermodynamic, transport, safety, and environmental properties for over 5000 inorganic substances and over 35,000 organic substances.
Major distributor of chemical supplies, includes price information for most products. Also provides detailed information on safety, white papers, and articles.