1113-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1113-71-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,1 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1113-71:
(6*1)+(5*1)+(4*1)+(3*3)+(2*7)+(1*1)=39
39 % 10 = 9
So 1113-71-9 is a valid CAS Registry Number.