109495-19-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109495-19-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,4,9 and 5 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 109495-19:
(8*1)+(7*0)+(6*9)+(5*4)+(4*9)+(3*5)+(2*1)+(1*9)=144
144 % 10 = 4
So 109495-19-4 is a valid CAS Registry Number.