663168-61-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663168-61-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,1,6 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 663168-61:
(8*6)+(7*6)+(6*3)+(5*1)+(4*6)+(3*8)+(2*6)+(1*1)=174
174 % 10 = 4
So 663168-61-4 is a valid CAS Registry Number.