Trans-2-Methylcyclopropanamine hydrochloride is primarily used in organic synthesis as a building block for the creation of more complex molecules. Its unique cyclopropane ring structure makes it valuable in the development of pharmaceuticals, particularly in the synthesis of compounds with potential therapeutic effects. It can serve as an intermediate in the production of drugs targeting neurological disorders, due to its amine functionality, which can interact with biological systems. Additionally, it may be utilized in the research and development of agrochemicals, where its structural features can contribute to the design of novel pesticides or herbicides. Its applications are often centered around its ability to introduce specific structural motifs into molecules, enhancing their biological activity or chemical properties.