1,7-Di(methyl-d3)-naphthalene

1,7-Di(methyl-d3)-naphthalene is a deuterated derivative of naphthalene, a polycyclic aromatic hydrocarbon (PAH) commonly found in coal tar and crude oil. This compound is labeled with deuterium atoms, which replace the hydrogen atoms in the methyl groups at positions 1 and 7 on the naphthalene ring. 1,7-Di(methyl-d3)-naphthalene is used as a stable isotope-labeled internal standard in analytical chemistry applications such as gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS). GC-MS and LC-MS are powerful analytical techniques used to identify and quantify small molecules in complex mixtures. The use of a labeled internal standard helps to improve the accuracy and precision of these measurements. In addition to its analytical applications, 1,7-Di(methyl-d3)-naphthalene has also been used in studies of the physical and chemical properties of PAHs. Deuterium-labeled compounds are often used in NMR spectroscopy to study molecular structure and dynamics. From a chemical perspective, 1,7-Di(methyl-d3)-naphthalene is a non-toxic, non-flammable, and stable compound. Its physical properties include a melting point of 78-80°C and a boiling point of 296-300°C. It is soluble in common organic solvents such as chloroform, dichloromethane, and benzene. Overall, 1,7-Di(methyl-d3)-naphthalene is a valuable compound in the field of analytical chemistry and a useful tool for studying the properties of PAHs.