6-Hydroxy-4-quinolinecarboxylic acid is primarily utilized in the field of medicinal chemistry and pharmaceutical research. It serves as a key intermediate in the synthesis of various biologically active compounds, particularly those with potential antimicrobial and anti-inflammatory properties. Researchers often explore its derivatives for developing new drugs targeting bacterial infections and inflammatory diseases. Additionally, this compound is studied for its potential role in chelation therapy, where it may bind to metal ions to treat metal toxicity. Its structural features make it a valuable building block in organic synthesis, contributing to the development of novel therapeutic agents.