ethylene glycol-d2

What is ethylene glycol-d2

**Introduction to Ethylene Glycol-d2 (EG-d2)** Ethylene Glycol-d2 (C₂D₄O₂) is a deuterated form of ethylene glycol, where hydrogen atoms are replaced by deuterium (D), a stable hydrogen isotope. This heavy analog retains the chemical properties of standard ethylene glycol while offering unique advantages in nuclear magnetic resonance (NMR) spectroscopy and reaction mechanism studies. Due to its isotopic purity, EG-d2 serves as an excellent solvent for NMR analysis, minimizing interference from proton signals. It is also used in organic synthesis, kinetic studies, and as a tracer in metabolic research. With high thermal stability and solubility, ethylene glycol-d2 is a valuable tool in scientific and industrial applications requiring precise isotopic labeling.

Preparation Process: Ethylene glycol-d2 (1,2-ethanediol-d2) can be prepared by deuterium exchange or reduction methods. One common approach involves the reduction of glyoxal (OHC-CHO) with sodium borodeuteride (NaBD4) in deuterated water (D2O). The reaction proceeds as follows: Dissolve glyoxal in D2O, cool to 0°C, and slowly add NaBD4 with stirring. After completion, acidify with DCl to quench excess NaBD4. Extract the product with an organic solvent (e.g., diethyl ether), dry over anhydrous MgSO4, and purify by distillation under reduced pressure. Alternatively, ethylene glycol can undergo H/D exchange by refluxing in D2O with a catalytic amount of DCl or NaOD, followed by repeated solvent removal and deuterium replenishment to maximize deuteration.

Usage Scenarios: Ethylene glycol-d2 (C2D6O2) is a deuterated form of ethylene glycol, where hydrogen atoms are replaced by deuterium. It serves as a solvent and reagent in nuclear magnetic resonance (NMR) spectroscopy, providing a deuterium lock signal for instrument stability. It is used in chemical synthesis, particularly in deuterium-labeling studies to trace reaction mechanisms or metabolic pathways. In pharmaceuticals, it aids in the development of deuterated drugs to enhance stability and bioavailability. Additionally, it functions as a cryoprotectant in low-temperature applications. Its non-reactive nature makes it valuable in isotopic dilution experiments and as an internal standard in mass spectrometry.

ethylene glycol-d2 Basic Info

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