663926-42-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663926-42-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,9,2 and 6 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 663926-42:
(8*6)+(7*6)+(6*3)+(5*9)+(4*2)+(3*6)+(2*4)+(1*2)=189
189 % 10 = 9
So 663926-42-9 is a valid CAS Registry Number.