4421-24-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4421-24-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,2 and 1 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4421-24:
(6*4)+(5*4)+(4*2)+(3*1)+(2*2)+(1*4)=63
63 % 10 = 3
So 4421-24-3 is a valid CAS Registry Number.