Methylpyrrolidone (NMP) is an organic compound with multiple functions and uses. Here are some common uses and functions of NMP: Solvent: NMP is a high-quality polar solvent that can dissolve many organic compounds, such as resins, polymers, rubber, natural fats, etc. It is widely used in industries such as coatings, cleaning agents, pigments, and inks. Reaction medium: NMP is a good reaction medium that can be used as a solvent or catalyst in many organic synthesis reactions. It can be used to dissolve and catalyze reactions such as esterification, amination, alkylation, alcoholization, sulfonation, etc. Drug carrier: NMP is used as a drug carrier, which can improve the solubility and bioavailability of drugs, and delay drug release. It is widely used in the pharmaceutical field in controlled release systems, local patches, transdermal patches, and so on.