2-(Methylthio)propanoic acid is primarily utilized as a key intermediate in the industrial synthesis of DL-methionine, an essential amino acid extensively used in animal nutrition, feed supplements, and pharmaceutical formulations. Due to its sulfur-containing thioether functionality, it serves as a valuable building block in organic synthesis for creating sulfur-functionalized compounds. It also finds applications as an intermediate in the production of specialty chemicals, such as additives for lubricants, corrosion inhibitors, and certain agrochemicals.