404909-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 404909-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,4,9,0 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 404909-81:
(8*4)+(7*0)+(6*4)+(5*9)+(4*0)+(3*9)+(2*8)+(1*1)=145
145 % 10 = 5
So 404909-81-5 is a valid CAS Registry Number.