28817-49-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28817-49-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,8,1 and 7 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 28817-49:
(7*2)+(6*8)+(5*8)+(4*1)+(3*7)+(2*4)+(1*9)=144
144 % 10 = 4
So 28817-49-4 is a valid CAS Registry Number.