Used as a key intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the production of thiazole-based drugs with antimicrobial and antifungal properties. It serves as a building block in the development of sulfonamide derivatives, which are important in medicinal chemistry. Also applied in the preparation of dyes and functional materials due to its aromatic and acidic characteristics. Its sulfonic acid group enhances water solubility, making it useful in formulations requiring polar components.