3-Butenylamine Hydrochloride is primarily used in organic synthesis as a building block for the preparation of various chemical compounds. It serves as a key intermediate in the production of pharmaceuticals, particularly in the synthesis of active pharmaceutical ingredients (APIs) that require amine functionalities. Additionally, it is utilized in the development of agrochemicals, where it contributes to the creation of herbicides, pesticides, and fungicides. Its reactive amine group makes it valuable in polymer chemistry, enabling the modification of polymers to enhance their properties. Furthermore, it finds application in research and development for the creation of novel materials and chemical entities.