It is commonly used as a derivatization agent in analytical chemistry, particularly in gas chromatography-mass spectrometry (GC-MS) for the analysis of compounds like carboxylic acids, phenols, and amines. The chemical aids in converting these compounds into more volatile and thermally stable derivatives, enhancing their detectability and separation during analysis. In organic synthesis, it serves as a methylating agent and is utilized in the preparation of various pharmaceuticals, agrochemicals, and fine chemicals. Additionally, it finds application in the synthesis of heterocyclic compounds and as a reagent in the production of intermediates for dyes and pigments. Its role in facilitating efficient and selective chemical transformations makes it valuable in research and industrial processes.