Benzo(H)Quinoline-10-Sulfonic Acid is primarily used in the field of organic synthesis, where it serves as a key intermediate in the production of various dyes and pigments. Its sulfonic acid group makes it particularly valuable in creating water-soluble dyes, which are essential for textile, paper, and leather industries. Additionally, this compound is utilized in the development of fluorescent markers and biological stains, aiding in research and diagnostic applications. Its ability to form stable complexes with metals also makes it useful in analytical chemistry for the detection and quantification of metal ions. Furthermore, it finds application in the synthesis of pharmaceuticals, particularly in the creation of compounds with potential antimicrobial and anti-inflammatory properties.