Organic sulfur compounds are chemical compounds that contain sulfur atoms bonded to carbon atoms. They are found in various natural sources, including plants, animals, and microorganisms. These compounds play essential roles in biological processes, such as metabolism and cellular signaling, and are important for the synthesis of proteins and enzymes. Many organic sulfur compounds are also used in industrial applications, such as in the production of fertilizers, pharmaceuticals, and pesticides. Common examples include dimethyl sulfoxide (DMSO) and sulfur-containing amino acids like cysteine and methionine, which are vital for human health and nutrition.