531491-23-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 531491-23-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,3,1,4,9 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 531491-23:
(8*5)+(7*3)+(6*1)+(5*4)+(4*9)+(3*1)+(2*2)+(1*3)=133
133 % 10 = 3
So 531491-23-3 is a valid CAS Registry Number.