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Looking for cas registry numbers or ca index names for known substances The chemical abstracts service (cas) has developed a registry of unique numeric identifiers, aka cas numbers or cas registry numbers, for more than 73 million organic and inorganic substances including compounds, metals, alloys, minerals, organometallics, elements, isotopes and biochemicals. 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.
Cas registry numbers (cas rn) are simple and regular, convenient for database searches This number, typically comprising up to ten digits, serves as a universal language for scientists, regulators, and industry professionals. 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.
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Redistribution rights for cas registry numbers are reserved by the american chemical society “cas registry” is a registered trademark of the american chemical society. 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
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