4420-16-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4420-16-0 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 0 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 4420-16:
(6*4)+(5*4)+(4*2)+(3*0)+(2*1)+(1*6)=60
60 % 10 = 0
So 4420-16-0 is a valid CAS Registry Number.