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