20428-49-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20428-49-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,2 and 8 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20428-49:
(7*2)+(6*0)+(5*4)+(4*2)+(3*8)+(2*4)+(1*9)=83
83 % 10 = 3
So 20428-49-3 is a valid CAS Registry Number.