403-02-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 403-02-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,0 and 3 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 403-02:
(5*4)+(4*0)+(3*3)+(2*0)+(1*2)=31
31 % 10 = 1
So 403-02-1 is a valid CAS Registry Number.