663946-24-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663946-24-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,9,4 and 6 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 663946-24:
(8*6)+(7*6)+(6*3)+(5*9)+(4*4)+(3*6)+(2*2)+(1*4)=195
195 % 10 = 5
So 663946-24-5 is a valid CAS Registry Number.