665-03-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 665-03-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,6 and 5 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 665-03:
(5*6)+(4*6)+(3*5)+(2*0)+(1*3)=72
72 % 10 = 2
So 665-03-2 is a valid CAS Registry Number.