77682-31-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77682-31-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,6,8 and 2 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 77682-31:
(7*7)+(6*7)+(5*6)+(4*8)+(3*2)+(2*3)+(1*1)=166
166 % 10 = 6
So 77682-31-6 is a valid CAS Registry Number.