77181-39-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77181-39-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,1,8 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 77181-39:
(7*7)+(6*7)+(5*1)+(4*8)+(3*1)+(2*3)+(1*9)=146
146 % 10 = 6
So 77181-39-6 is a valid CAS Registry Number.