6664-68-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6664-68-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,6 and 4 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 6664-68:
(6*6)+(5*6)+(4*6)+(3*4)+(2*6)+(1*8)=122
122 % 10 = 2
So 6664-68-2 is a valid CAS Registry Number.