191931-67-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191931-67-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,9,3 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 191931-67:
(8*1)+(7*9)+(6*1)+(5*9)+(4*3)+(3*1)+(2*6)+(1*7)=156
156 % 10 = 6
So 191931-67-6 is a valid CAS Registry Number.