663157-58-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663157-58-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,1,5 and 7 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 663157-58:
(8*6)+(7*6)+(6*3)+(5*1)+(4*5)+(3*7)+(2*5)+(1*8)=172
172 % 10 = 2
So 663157-58-2 is a valid CAS Registry Number.