28538-93-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28538-93-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,5,3 and 8 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 28538-93:
(7*2)+(6*8)+(5*5)+(4*3)+(3*8)+(2*9)+(1*3)=144
144 % 10 = 4
So 28538-93-4 is a valid CAS Registry Number.