401-64-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 401-64-9 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 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 401-64:
(5*4)+(4*0)+(3*1)+(2*6)+(1*4)=39
39 % 10 = 9
So 401-64-9 is a valid CAS Registry Number.