91189-31-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91189-31-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,1,8 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 91189-31:
(7*9)+(6*1)+(5*1)+(4*8)+(3*9)+(2*3)+(1*1)=140
140 % 10 = 0
So 91189-31-0 is a valid CAS Registry Number.