97531-66-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97531-66-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,5,3 and 1 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 97531-66:
(7*9)+(6*7)+(5*5)+(4*3)+(3*1)+(2*6)+(1*6)=163
163 % 10 = 3
So 97531-66-3 is a valid CAS Registry Number.