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Mass Spectrometry: Overview01:19

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Mass spectrometry is an analytical technique used to determine the molecular mass and molecular formula of a compound. The basic principle of mass spectrometry is to generate ions from the analyte molecule and measure these ion abundances against their molecular mass. One common type of ionization, known as electron ionization or EI, bombards the analyte molecules in the gas phase with high-energy electron beams. The electron beams displace an electron from the molecule and leave behind a...
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The ionization of a molecule into a molecular ion inside the mass spectrometer causes instability in the molecule's structure due to the loss of an electron. This eventually leads to the fragmentation or breaking of some bonds in the molecule. The fragmentation occurs predominantly at specific bonds to yield relatively stable fragments.
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Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.
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Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...
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Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
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Capturing Small Molecule Communication Between Tissues and Cells Using Imaging Mass Spectrometry
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Molecules New Aims and Scope.

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Summary
This summary is machine-generated.

This journal is expanding its scope beyond organic chemistry and natural products. It will now cover a broader range of scientific disciplines to better serve the research community.

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Area of Science:

  • Organic Chemistry
  • Natural Products Chemistry
  • Expanding Scientific Disciplines

Background:

  • Pioneering Open Access journal in organic chemistry and natural products for 22 years.
  • Journal has informally covered a broader range of topics for several years.
  • Formal announcement of expanded scope to reflect current practices.

Discussion:

  • The journal's evolution reflects the interconnectedness of modern scientific research.
  • Adaptation ensures continued relevance and service to a wider audience.
  • Maintaining high standards of quality and peer review across all covered areas.

Key Insights:

  • The journal is broadening its topical coverage.
  • This expansion aligns with the journal's established reputation.
  • The journal remains committed to Open Access principles.

Outlook:

  • Anticipating increased submissions across diverse scientific fields.
  • Aiming to become a leading platform for interdisciplinary research.
  • Continued commitment to disseminating high-impact scientific findings globally.