7445-68-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7445-68-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,4 and 5 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 7445-68:
(6*7)+(5*4)+(4*4)+(3*5)+(2*6)+(1*8)=113
113 % 10 = 3
So 7445-68-3 is a valid CAS Registry Number.