ChEBI: Oxolinic acid is a quinolinemonocarboxylic acid having the carboxy group at position 7 as well as oxo and ethyl groups at positions 4 and 1 respectively and a dioxolo ring fused at the 5- and 6-positions. A synthetic antibiotic, it is used in veterinary medicine for the treatment of bacterial infections in cattle, pigs and poultry. It has a role as an antiinfective agent, an antibacterial drug, an enzyme inhibitor, an antimicrobial agent and an antifungal agent. It is a quinolinemonocarboxylic acid, an organic heterotricyclic compound, an aromatic carboxylic acid, an oxacycle and a quinolone antibiotic. It is a conjugate acid of an oxolinate.