13031-05-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13031-05-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,0,3 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 13031-05:
(7*1)+(6*3)+(5*0)+(4*3)+(3*1)+(2*0)+(1*5)=45
45 % 10 = 5
So 13031-05-5 is a valid CAS Registry Number.