13399-43-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13399-43-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,3,9 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 13399-43:
(7*1)+(6*3)+(5*3)+(4*9)+(3*9)+(2*4)+(1*3)=114
114 % 10 = 4
So 13399-43-4 is a valid CAS Registry Number.