4458-43-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4458-43-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,5 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 4458-43:
(6*4)+(5*4)+(4*5)+(3*8)+(2*4)+(1*3)=99
99 % 10 = 9
So 4458-43-9 is a valid CAS Registry Number.