Propargylamine hydrochloride is widely used in organic synthesis as a building block for the preparation of various pharmaceuticals and bioactive compounds. It serves as a key intermediate in the production of agrochemicals, particularly fungicides and herbicides, due to its ability to introduce the propargyl group into target molecules. In medicinal chemistry, it is utilized to develop drugs targeting neurodegenerative diseases, such as Parkinson's and Alzheimer's, owing to its neuroprotective properties. Additionally, it is employed in the synthesis of corrosion inhibitors for industrial applications, particularly in metal protection and oilfield chemicals. Its reactivity also makes it valuable in the preparation of polymers and advanced materials with specialized properties.