13871-90-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13871-90-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,8,7 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 13871-90:
(7*1)+(6*3)+(5*8)+(4*7)+(3*1)+(2*9)+(1*0)=114
114 % 10 = 4
So 13871-90-4 is a valid CAS Registry Number.