O-(2-Methylallyl)hydroxylamine hydrochloride is primarily used in organic synthesis as a versatile building block for the creation of various chemical compounds. It is particularly valuable in the preparation of heterocycles, which are essential structures in pharmaceuticals and agrochemicals. The compound is also employed in the development of inhibitors and modulators for biological targets, contributing to drug discovery efforts. Additionally, it serves as a key intermediate in the synthesis of specialized polymers and materials with unique properties. Its reactive functional groups make it useful in cross-coupling reactions and other transformations in medicinal chemistry and material science.