817177-77-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 817177-77-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,7,1,7 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 817177-77:
(8*8)+(7*1)+(6*7)+(5*1)+(4*7)+(3*7)+(2*7)+(1*7)=188
188 % 10 = 8
So 817177-77-8 is a valid CAS Registry Number.