99513-81-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99513-81-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,5,1 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 99513-81:
(7*9)+(6*9)+(5*5)+(4*1)+(3*3)+(2*8)+(1*1)=172
172 % 10 = 2
So 99513-81-2 is a valid CAS Registry Number.