91159-23-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91159-23-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,1,5 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91159-23:
(7*9)+(6*1)+(5*1)+(4*5)+(3*9)+(2*2)+(1*3)=128
128 % 10 = 8
So 91159-23-8 is a valid CAS Registry Number.