40003-28-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40003-28-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,0,0 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 40003-28:
(7*4)+(6*0)+(5*0)+(4*0)+(3*3)+(2*2)+(1*8)=49
49 % 10 = 9
So 40003-28-9 is a valid CAS Registry Number.