13987-44-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13987-44-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,9,8 and 7 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 13987-44:
(7*1)+(6*3)+(5*9)+(4*8)+(3*7)+(2*4)+(1*4)=135
135 % 10 = 5
So 13987-44-5 is a valid CAS Registry Number.