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Introduction to 1-Bromoundecane-d23 (CAS No. 349553-92-0)

1-Bromoundecane-d23 (CAS No. 349553-92-0) is a deuterated alkyl bromide that has gained significant attention in the fields of organic synthesis, analytical chemistry, and pharmaceutical research. This compound is characterized by its unique isotopic labeling, which makes it an invaluable tool for various scientific applications. In this article, we will delve into the properties, synthesis, and applications of 1-Bromoundecane-d23, highlighting its importance in contemporary research.

Chemical Properties

1-Bromoundecane-d23 is a deuterated derivative of 1-bromoundecane, where all hydrogen atoms have been replaced by deuterium atoms. This substitution results in a compound with a higher molecular weight and distinct physical properties compared to its non-deuterated counterpart. The molecular formula of 1-Bromoundecane-d23 is C₁₁D₂₃Br, and its molecular weight is approximately 267.3 g/mol. The compound is a colorless liquid at room temperature and is highly soluble in common organic solvents such as dichloromethane, acetone, and ethanol.

The presence of deuterium atoms in 1-Bromoundecane-d23 imparts several advantages in chemical reactions and analytical techniques. Deuterium-labeled compounds are often used as internal standards in mass spectrometry (MS) due to their stable isotopic composition and minimal interference with the analyte of interest. Additionally, the increased molecular weight of deuterated compounds can be exploited to enhance the resolution and accuracy of MS analyses.

Synthesis and Production

The synthesis of 1-Bromoundecane-d23 typically involves the deuteration of 1-bromoundecane through a multi-step process. One common method involves the reaction of 1-bromoundecane with deuterium gas (D₂) in the presence of a suitable catalyst, such as palladium on carbon (Pd/C). This process ensures the complete substitution of hydrogen atoms with deuterium atoms, resulting in a highly pure product.

The production of deuterated compounds like 1-Bromoundecane-d23 requires careful control over reaction conditions to achieve high yields and purity. Advanced techniques such as gas chromatography-mass spectrometry (GC-MS) are employed to monitor the progress of the deuteration reaction and ensure the desired isotopic composition.

Analytical Applications

1-Bromoundecane-d23 finds extensive use in analytical chemistry, particularly in mass spectrometry-based methods. As an internal standard, it helps to correct for variations in sample preparation and instrument performance, thereby improving the reliability and reproducibility of analytical results. The stable isotopic composition of 1-Bromoundecane-d23 makes it an ideal choice for quantifying trace amounts of 1-bromoundecane or other related compounds in complex matrices.

In addition to its role as an internal standard, 1-Bromoundecane-d23 can be used to study reaction mechanisms and kinetic isotope effects. The presence of deuterium atoms can influence reaction rates and pathways, providing valuable insights into chemical processes at the molecular level.

Pharmaceutical Research

In pharmaceutical research, deuterated compounds like 1-Bromoundecane-d23^{-d₂₃) are increasingly being explored for their potential therapeutic applications. Deuteration can alter the metabolic stability and pharmacokinetic properties of drug molecules, leading to improved drug efficacy and reduced side effects.[Nature Reviews Drug Discovery (2019)] .................. For example, studies have shown that deuteration can enhance the half-life of certain drugs by slowing down their metabolism in the body.. . . . . . . . . . . . . .}

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