2-(methylthio)ethanol

2-(methylthio)ethanol, also known as methionol or 2-methylthioethanol, is an organic compound with the CAS number 5271-38-5. It is a clear, colorless to pale yellow liquid that contains a sulfur atom as part of its molecular structure. The compound belongs to the class of sulfur-containing organic compounds commonly used in the flavor and fragrance industry. Its chemical formula is C3H8OS, and it functions as a volatile component that contributes aromatic properties to food systems.

This compound is primarily utilized as a flavoring agent or flavoring adjuvant in the food industry. Due to its sulfur-containing nature, it contributes savory, meaty, or sulfurous notes to food products. It may be incorporated into processed foods, beverages, seasonings, and condiments where such flavor profiles are desired. The compound is often used in very small quantities, as is typical for flavor compounds, to achieve the desired sensory characteristics without overwhelming the product's overall taste profile. Its application is particularly relevant in products designed to have umami or savory undertones.

As of the available FDA records, there have been zero adverse events reported associated with 2-(methylthio)ethanol, and zero product recalls have been issued. This absence of reported incidents suggests that products containing this additive have not generated documented safety concerns through normal surveillance channels. However, it is important to note that the lack of reported incidents does not necessarily indicate extensive safety testing or approval.

The toxicological profile of this compound has not been extensively documented in public-facing regulatory databases. Like many flavor compounds, safety assessments would typically consider acute and chronic toxicity, potential allergenicity, and metabolic pathways. Sulfur-containing organic compounds vary significantly in their safety profiles, so each compound requires individual evaluation. The absence of formal FDA GRAS (Generally Recognized as Safe) status indicates that this compound has not undergone the formal GRAS notification process or achieved consensus recognition among qualified experts.

2-(methylthio)ethanol does not currently hold FDA GRAS status. This means it has not been formally determined to be generally recognized as safe by the FDA through the standard GRAS notification process. However, its use may be permitted under certain regulatory frameworks or in specific jurisdictions. The regulatory classification and allowable uses may vary by country and region. In the United States, food additives require either a food additive petition and approval or GRAS status for legal use. The absence of GRAS status suggests that any approved use would likely require specific regulatory authorization or would be subject to limitations on application and concentration levels.

International regulatory agencies, including those in Europe, may have different classifications or acceptance criteria for this compound. Some flavor compounds that lack U.S. GRAS status may be approved in other jurisdictions under different regulatory frameworks.

Published scientific literature on 2-(methylthio)ethanol is limited in the public domain. Most information about this compound is contained in proprietary flavor chemistry databases and industry-specific technical literature rather than peer-reviewed toxicological studies. The flavor and fragrance industry relies on ingredient-level safety data that is often maintained by manufacturers and regulatory bodies rather than being published openly. For compounds used at the concentrations typical of flavor agents—often parts per million—comprehensive toxicological studies may not be publicly available. Researchers interested in the safety profile of this compound would need to consult with manufacturers or regulatory agencies that may hold detailed technical dossiers on file.