What is the regularity of CAS numbers for chemical substances? The CAS number registered for a chemical substance is written, for example, AAA-BB-C, separated into three parts by "-". What is the regularity of the number corresponding to "C"?
What is the regularity of CAS numbers for chemical substances? The CAS number registered for a chemical substance is written, for example, AAA-BB-C, separated into three parts by "-". What is the regularity of the number corresponding to "C"?
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