17404-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17404-40-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,4,0 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 17404-40:
(7*1)+(6*7)+(5*4)+(4*0)+(3*4)+(2*4)+(1*0)=89
89 % 10 = 9
So 17404-40-9 is a valid CAS Registry Number.