660-83-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 660-83-3 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 0 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 660-83:
(5*6)+(4*6)+(3*0)+(2*8)+(1*3)=73
73 % 10 = 3
So 660-83-3 is a valid CAS Registry Number.