(3-Bromo-pyridin-2-yl)-hydrazine is primarily used in organic synthesis as a versatile building block for the preparation of various heterocyclic compounds. It serves as a key intermediate in the development of pharmaceuticals, particularly in the synthesis of active pharmaceutical ingredients (APIs) that target neurological disorders and infectious diseases. Its hydrazine moiety makes it valuable for constructing pyrazole and triazole derivatives, which are common scaffolds in drug discovery. Additionally, it is utilized in agrochemical research for designing novel pesticides and herbicides due to its ability to interact with biological targets. The compound’s bromine atom also allows for further functionalization through cross-coupling reactions, expanding its utility in creating complex molecules for research and industrial applications.