Glutaric acid monomethyl ester chloride is primarily used in organic synthesis as an intermediate for the production of various chemical compounds. It serves as a key building block in the creation of pharmaceuticals, particularly in the synthesis of active pharmaceutical ingredients (APIs) where specific ester and chloride functionalities are required. Additionally, it is utilized in the development of specialty chemicals, including polymers and coatings, where it contributes to the modification of material properties such as flexibility, durability, and adhesion. Its reactivity also makes it valuable in research and development for creating novel compounds with potential applications in agrochemicals and advanced materials.