40171-97-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40171-97-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,1,7 and 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 40171-97:
(7*4)+(6*0)+(5*1)+(4*7)+(3*1)+(2*9)+(1*7)=89
89 % 10 = 9
So 40171-97-9 is a valid CAS Registry Number.