91188-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91188-89-5 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 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 91188-89:
(7*9)+(6*1)+(5*1)+(4*8)+(3*8)+(2*8)+(1*9)=155
155 % 10 = 5
So 91188-89-5 is a valid CAS Registry Number.