CAS - Chemical Abstracts Service - Database Counter...


In addition to organic and inorganic substances, REGISTRY has:
70,633,867 sequences
CAS RN 3034832-66-8 is the most recent CAS Registry Number

CAS also provides specialized databases of chemical reactions, regulated chemicals, commercially available chemicals and Markush substance information.

Specialized Substance Collections Count
CASREACT® 162,624,330 Single and multi-step reactions, and synthetic preparations
CHEMLIST® 417,385 Inventoried/regulated substances
CHEMCATS® Commercially available chemicals
MARPAT® 1,441,944 Searchable Markush structures