428-84-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 428-84-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,2 and 8 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 428-84:
(5*4)+(4*2)+(3*8)+(2*8)+(1*4)=72
72 % 10 = 2
So 428-84-2 is a valid CAS Registry Number.