109682-71-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109682-71-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,6,8 and 2 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 109682-71:
(8*1)+(7*0)+(6*9)+(5*6)+(4*8)+(3*2)+(2*7)+(1*1)=145
145 % 10 = 5
So 109682-71-5 is a valid CAS Registry Number.