818-17-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 818-17-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,1 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 818-17:
(5*8)+(4*1)+(3*8)+(2*1)+(1*7)=77
77 % 10 = 7
So 818-17-7 is a valid CAS Registry Number.