109343-17-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109343-17-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,3,4 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 109343-17:
(8*1)+(7*0)+(6*9)+(5*3)+(4*4)+(3*3)+(2*1)+(1*7)=111
111 % 10 = 1
So 109343-17-1 is a valid CAS Registry Number.