CAS - Chemical Abstracts Service - Database Counter...


In addition to organic and inorganic substances, REGISTRY has:
70,629,529 sequences
CAS RN 3034630-45-7 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® 162,565,876 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