71812-61-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71812-61-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,8,1 and 2 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 71812-61:
(7*7)+(6*1)+(5*8)+(4*1)+(3*2)+(2*6)+(1*1)=118
118 % 10 = 8
So 71812-61-8 is a valid CAS Registry Number.