42858-43-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42858-43-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,8,5 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 42858-43:
(7*4)+(6*2)+(5*8)+(4*5)+(3*8)+(2*4)+(1*3)=135
135 % 10 = 5
So 42858-43-5 is a valid CAS Registry Number.