136616-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136616-31-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,6,1 and 6 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 136616-31:
(8*1)+(7*3)+(6*6)+(5*6)+(4*1)+(3*6)+(2*3)+(1*1)=124
124 % 10 = 4
So 136616-31-4 is a valid CAS Registry Number.