91923-61-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91923-61-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,2 and 3 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 91923-61:
(7*9)+(6*1)+(5*9)+(4*2)+(3*3)+(2*6)+(1*1)=144
144 % 10 = 4
So 91923-61-4 is a valid CAS Registry Number.