842-42-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 842-42-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 842-42:
(5*8)+(4*4)+(3*2)+(2*4)+(1*2)=72
72 % 10 = 2
So 842-42-2 is a valid CAS Registry Number.