77-64-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77-64-5 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 7 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 77-64:
(4*7)+(3*7)+(2*6)+(1*4)=65
65 % 10 = 5
So 77-64-5 is a valid CAS Registry Number.