402-03-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 402-03-9 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 2 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 402-03:
(5*4)+(4*0)+(3*2)+(2*0)+(1*3)=29
29 % 10 = 9
So 402-03-9 is a valid CAS Registry Number.