871-66-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 871-66-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,7 and 1 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 871-66:
(5*8)+(4*7)+(3*1)+(2*6)+(1*6)=89
89 % 10 = 9
So 871-66-9 is a valid CAS Registry Number.