13909-19-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13909-19-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,9,0 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 13909-19:
(7*1)+(6*3)+(5*9)+(4*0)+(3*9)+(2*1)+(1*9)=108
108 % 10 = 8
So 13909-19-8 is a valid CAS Registry Number.