171039-15-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171039-15-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,0,3 and 9 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 171039-15:
(8*1)+(7*7)+(6*1)+(5*0)+(4*3)+(3*9)+(2*1)+(1*5)=109
109 % 10 = 9
So 171039-15-9 is a valid CAS Registry Number.