For common and frequently regulated chemicals, you can use cas common chemistry, an open community resource with nearly 500,000 chemical substances from cas registry. This number, typically comprising up to ten digits, serves as a universal language for scientists, regulators, and industry professionals. Cas registry numbers (cas rn) are simple and regular, convenient for database searches
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They offer a reliable, common and international link to every specific substance across the various nomenclatures and disciplines used by branches of science, industry, and regulatory bodies.
Redistribution rights for cas registry numbers are reserved by the american chemical society
“cas registry” is a registered trademark of the american chemical society. Chemsrc provides free cas number search engine to fast access over millions chemical structures, cas number, msds, properties and associated information. Quickly confirm chemical names, cas registry numbers®, structures or basic physical properties by searching compounds of general interest or leveraging an api connection. A cas number is a unique identifier assigned to every chemical substance described in the open scientific literature
