91091-12-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91091-12-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,0,9 and 1 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 91091-12:
(7*9)+(6*1)+(5*0)+(4*9)+(3*1)+(2*1)+(1*2)=112
112 % 10 = 2
So 91091-12-2 is a valid CAS Registry Number.