1,6-Di(methyl-d3)-naphthalene

1,6-Di(methyl-d3)-naphthalene is a deuterated form of naphthalene, which is a polycyclic aromatic hydrocarbon (PAH) composed of two fused benzene rings. It is commonly used as a stable isotope-labeled internal standard in gas chromatography-mass spectrometry (GC-MS) analyses to determine the concentration and isotopic composition of naphthalene and other related PAHs in environmental and biological samples. 1,6-Di(methyl-d3)-naphthalene is a colorless to light yellow solid with a molecular weight of 202.3 g/mol. It is highly stable and does not react with water, acids, or bases. In GC-MS analyses, it is typically used as a surrogate standard for quantifying naphthalene and other related PAHs, as it has similar physical and chemical properties to these compounds, but can be easily distinguished from them based on its isotopic composition. The use of 1,6-Di(methyl-d3)-naphthalene as an internal standard in GC-MS analyses has several advantages, including increased accuracy and precision of quantification, improved sensitivity and selectivity, and reduced matrix effects. It is also a cost-effective alternative to using labeled PAH standards, as it can be synthesized in-house or purchased commercially at a lower cost. Overall, 1,6-Di(methyl-d3)-naphthalene is an important tool for environmental and analytical chemists in their efforts to understand the sources, fate, and effects of PAHs in the environment.