766-65-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 766-65-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,6 and 6 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 766-65:
(5*7)+(4*6)+(3*6)+(2*6)+(1*5)=94
94 % 10 = 4
So 766-65-4 is a valid CAS Registry Number.