76680-65-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 76680-65-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,6,8 and 0 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 76680-65:
(7*7)+(6*6)+(5*6)+(4*8)+(3*0)+(2*6)+(1*5)=164
164 % 10 = 4
So 76680-65-4 is a valid CAS Registry Number.