Magnesium methoxide solution is widely used as a catalyst in organic synthesis, particularly in the production of biodiesel. It facilitates the transesterification process, where triglycerides react with methanol to form fatty acid methyl esters (biodiesel) and glycerol. Its high catalytic efficiency and ability to operate under mild conditions make it a preferred choice in the industry.

In polymer chemistry, this solution serves as a polymerization initiator or co-catalyst, especially in the synthesis of polyolefins and other specialty polymers. It helps control the molecular weight and structure of the polymers, enhancing their mechanical and thermal properties.

Additionally, it is employed in the pharmaceutical industry for the synthesis of active pharmaceutical ingredients (APIs) and intermediates. Its strong base properties make it useful in deprotonation reactions and the formation of carbon-carbon bonds.

In material science, magnesium methoxide solution is used to produce magnesium oxide (MgO) nanoparticles, which have applications in catalysis, electronics, and environmental remediation. It also acts as a precursor for coatings and thin films in advanced materials.