191531-69-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191531-69-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,5,3 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 191531-69:
(8*1)+(7*9)+(6*1)+(5*5)+(4*3)+(3*1)+(2*6)+(1*9)=138
138 % 10 = 8
So 191531-69-8 is a valid CAS Registry Number.