13143-81-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13143-81-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,1,4 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 13143-81:
(7*1)+(6*3)+(5*1)+(4*4)+(3*3)+(2*8)+(1*1)=72
72 % 10 = 2
So 13143-81-2 is a valid CAS Registry Number.