409304-23-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 409304-23-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,9,3,0 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 409304-23:
(8*4)+(7*0)+(6*9)+(5*3)+(4*0)+(3*4)+(2*2)+(1*3)=120
120 % 10 = 0
So 409304-23-0 is a valid CAS Registry Number.