331-02-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331-02-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,3 and 1 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 331-02:
(5*3)+(4*3)+(3*1)+(2*0)+(1*2)=32
32 % 10 = 2
So 331-02-2 is a valid CAS Registry Number.