Used as an intermediate in the synthesis of azo dyes and pigments, particularly for producing yellow and orange shades with good lightfastness. Employed in the manufacture of agricultural chemicals, including certain herbicides and fungicides, due to its ability to form biologically active molecules. Also utilized in the development of pharmaceuticals, serving as a building block in the production of analgesics and anti-inflammatory agents. Its hydrochloride salt form enhances stability and solubility, making it suitable for use in controlled chemical reactions. Additionally, it finds application in the production of specialty polymers and rubber chemicals, where it acts as a curing agent or antioxidant precursor.