129916-66-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129916-66-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,9,1 and 6 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 129916-66:
(8*1)+(7*2)+(6*9)+(5*9)+(4*1)+(3*6)+(2*6)+(1*6)=161
161 % 10 = 1
So 129916-66-1 is a valid CAS Registry Number.