(P231)
English
CAS Registry Number
identifier for a chemical substance or compound per Chemical Abstract Service's Registry database
- CAS Number
- CAS RN
Data type
External identifier
Statements
50,000,000
7 September 2009
see [[en:w:CAS registry number]] for detailed method of numbering (English)
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https://chem.nlm.nih.gov/chemidplus/rn/$1
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https://commonchemistry.cas.org/detail?cas_rn=$1
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^https?:\/\/(?:www\.)?commonchemistry\.org\/ChemicalDetail\.aspx\?ref=([1-9]\d{1,6}-\d{2}-\d)
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^https?:\/\/chem\.nlm\.nih\.gov\/chemidplus\/rn\/([1-9]\d{1,6}-\d{2}-\d)
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^https?:\/\/(?:www\.)?commonchemistry\.cas\.org\/detail\?cas_rn=([1-9]\d{1,6}-\d{2}-\d)
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http://www.chemnet.com/cas/supplier.cgi?exact=dict&terms=$1
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https://webbook.nist.gov/cgi/cbook.cgi?ID=C$1
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https://webbook.nist.gov/cgi/cbook.cgi?ID=$1
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https://commonchemistry.cas.org/results?q=$1
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[1-9]\d{1,6}-\d{2}-\d
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Constraints
[1-9]\d{1,6}-\d{2}-\d
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