91137-77-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91137-77-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,1,3 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 91137-77:
(7*9)+(6*1)+(5*1)+(4*3)+(3*7)+(2*7)+(1*7)=128
128 % 10 = 8
So 91137-77-8 is a valid CAS Registry Number.