28344-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28344-40-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,3,4 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 28344-40:
(7*2)+(6*8)+(5*3)+(4*4)+(3*4)+(2*4)+(1*0)=113
113 % 10 = 3
So 28344-40-3 is a valid CAS Registry Number.