54128-99-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54128-99-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,1,2 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 54128-99:
(7*5)+(6*4)+(5*1)+(4*2)+(3*8)+(2*9)+(1*9)=123
123 % 10 = 3
So 54128-99-3 is a valid CAS Registry Number.