42558-04-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42558-04-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,5 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 42558-04:
(7*4)+(6*2)+(5*5)+(4*5)+(3*8)+(2*0)+(1*4)=113
113 % 10 = 3
So 42558-04-3 is a valid CAS Registry Number.