136931-77-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136931-77-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,9,3 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 136931-77:
(8*1)+(7*3)+(6*6)+(5*9)+(4*3)+(3*1)+(2*7)+(1*7)=146
146 % 10 = 6
So 136931-77-6 is a valid CAS Registry Number.