18139-99-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18139-99-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,1,3 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 18139-99:
(7*1)+(6*8)+(5*1)+(4*3)+(3*9)+(2*9)+(1*9)=126
126 % 10 = 6
So 18139-99-6 is a valid CAS Registry Number.