CAS Number


  • CAS

When browsing drug cards on DrugBank, the fields entitled 'CAS number' and/or 'CAS' display a unique string of numbers that represents the Chemical Abstracts Service (CAS) registry number assigned to the drug or [active moieties] referred to on the drug card.

For example, the CAS number for magnesium hydroxide is 1309-42-8.

The Chemical Abstracts Service (CAS) can be accessed at