1171916-91-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1171916-91-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,1,9,1 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1171916-91:
(9*1)+(8*1)+(7*7)+(6*1)+(5*9)+(4*1)+(3*6)+(2*9)+(1*1)=158
158 % 10 = 8
So 1171916-91-8 is a valid CAS Registry Number.