663197-88-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663197-88-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,1,9 and 7 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 663197-88:
(8*6)+(7*6)+(6*3)+(5*1)+(4*9)+(3*7)+(2*8)+(1*8)=194
194 % 10 = 4
So 663197-88-4 is a valid CAS Registry Number.