A synthetic 1,8-naphthyridine antimicrobial agent with a limited bacteriocidal spectrum. It is an inhibitor of the A subunit of bacterial DNA gyrase.

Nalidixic Acid
| Description | |
|---|---|
| 1-Ethyl-7-methyl-4-oxo-[1,8]naphthyridine-3-carboxylic acid | |
| 389-08-2 | |
| C12H12N2O3 | |
| 1-Ethyl-1,4-dihydro-7-methyl-4-oxo-1,8-naphthyridine-3-carboxylic acid sodium salt | |
| For the treatment of urinary tract infections caused by susceptible gram-negative microorganisms, including the majority of E. Coli, Enterobacter species, Klebsiella species, and Proteus species. | |