16491-64-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16491-64-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,4,9 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 16491-64:
(7*1)+(6*6)+(5*4)+(4*9)+(3*1)+(2*6)+(1*4)=118
118 % 10 = 8
So 16491-64-8 is a valid CAS Registry Number.