Ethyl (5-Ethyl-2-pyridinyl)-1,1-d2-acetate

Ethyl (5-Ethyl-2-pyridinyl)-1,1-d2-acetate is a chemical compound typically used in the pharmaceutical industry as a labeled internal standard. It is a deuterated analog of ethyl (5-ethyl-2-pyridinyl) acetate, a pyridine derivative that serves as a precursor in the synthesis of various drugs and agrochemicals. The compound has a molecular formula of C10H11D2NO2 and a molecular weight of 182.23 g/mol. It is a clear, colorless to slightly yellow liquid with a boiling point of 197-198°C and a melting point of -25°C. The compound is stable under normal conditions and is not reactive with typical organic solvents, but it should be stored away from heat and moisture to prevent degradation. Ethyl (5-Ethyl-2-pyridinyl)-1,1-d2-acetate is commonly used as a stable isotope-labeled internal standard in mass spectrometry experiments. The deuterium atoms in the compound provide a unique signature that allows the labeled compound to be distinguished from the unlabeled compound during analysis. This enables accurate quantification of the target compound in complex mixtures, such as biological samples. In summary, Ethyl (5-Ethyl-2-pyridinyl)-1,1-d2-acetate is a useful chemical compound that finds application as a labeled internal standard in mass spectrometry experiments. Its stable isotopic labeling allows for accurate quantification of target compounds in complex mixtures, making it a valuable tool in the pharmaceutical industry.