Used as a building block in the synthesis of pharmaceuticals and agrochemicals due to its pyridine ring and sulfonic acid group, which enhance solubility and binding properties. Commonly employed in the development of catalysts and ionic liquids for green chemistry applications. Also utilized in biochemical research as a derivatizing agent for amines and proteins to improve detection in analytical methods like mass spectrometry. Its polar nature makes it suitable for use in electrochemical sensors and conductive materials.