4-(Methyl-d3-thio)-phenol

4-(Methyl-d3-thio)-phenol is a chemical compound that is primarily used in the field of organic chemistry. It is a derivative of phenol that contains a deuterium-labeled methylthio group (-S-CH3) at the 4-position of the phenyl ring. This unique modification of the parent molecule allows researchers to study the behavior and reactions of specific functional groups under various conditions. In terms of chemical information, 4-(Methyl-d3-thio)-phenol has a molecular formula of C7H6D3OS, and a molecular weight of 154.26 g/mol. It has a melting point of approximately 45-50 degrees Celsius and is a yellow to brownish crystalline powder that is sparingly soluble in water. The compound is commonly used as a labeled internal standard in mass spectrometry-based assays to quantify the levels of other phenolic compounds. It can also be used as a reagent in organic synthesis reactions to introduce a deuterium-labeled methylthio group into other molecules. Overall, 4-(Methyl-d3-thio)-phenol is a valuable tool for researchers in the field of organic chemistry, allowing for precise analysis and manipulation of specific functional groups.