842-78-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 842-78-4 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, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 842-78:
(5*8)+(4*4)+(3*2)+(2*7)+(1*8)=84
84 % 10 = 4
So 842-78-4 is a valid CAS Registry Number.