191171-80-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191171-80-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,1,7 and 1 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 191171-80:
(8*1)+(7*9)+(6*1)+(5*1)+(4*7)+(3*1)+(2*8)+(1*0)=129
129 % 10 = 9
So 191171-80-9 is a valid CAS Registry Number.