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Related Concept Videos

Phase II Reactions: Methylation Reactions01:17

Phase II Reactions: Methylation Reactions

Methylation is a phase II biotransformation process involving the attachment of a methyl group to a substrate. Enzymes known as methyltransferases orchestrate this reaction.
The mechanism of methylation unfolds in two stages. The first stage sees a methyltransferase enzyme facilitating the transfer of a methyl group from S-adenosylmethionine (SAM) to the substrate, forming S-adenosylhomocysteine (SAH). The second stage involves further metabolism of SAH into homocysteine, which can be recycled...
NMR Spectroscopy of Benzene Derivatives01:37

NMR Spectroscopy of Benzene Derivatives

Simple unsubstituted benzene has six aromatic protons, all chemically equivalent. Therefore, benzene exhibits only a singlet peak at δ 7.3 ppm in the 1H NMR spectrum. The observed shift is far downfield because the aromatic ring current strongly deshields the protons. Any substitution on the benzene ring makes the aromatic protons nonequivalent, and the protons split each other. The peak is, therefore, no longer a singlet and the splitting pattern and their associated coupling constants depend...

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Related Experiment Video

Updated: Jun 1, 2026

Solid Phase 11C-Methylation, Purification and Formulation for the Production of PET Tracers
09:25

Solid Phase 11C-Methylation, Purification and Formulation for the Production of PET Tracers

Published on: October 24, 2019

Methyl 5-bromo-6-methyl-picolinate.

Ya-Ming Wu, Chun-Ming Wu, Yong Wang

    Acta Crystallographica. Section E, Structure Reports Online
    |May 18, 2011
    PubMed
    Summary

    This study investigated crystal packing interactions for C(8)H(8)BrNO(2). The compound exhibited minimal intermolecular forces, with only a weak bromine-bromine interaction observed.

    Area of Science:

    • Crystallography
    • Chemical Physics

    Background:

    • Understanding intermolecular interactions is crucial for predicting material properties.
    • Crystal packing dictates the solid-state behavior of chemical compounds.

    Purpose of the Study:

    • To analyze the intermolecular interactions within the crystal structure of C(8)H(8)BrNO(2).
    • To identify dominant forces governing the compound's crystal packing.

    Main Methods:

    • Single-crystal X-ray diffraction was employed to determine the molecular structure.
    • Analysis of crystal packing involved identifying non-covalent interactions.

    Main Results:

    • The crystal structure of C(8)H(8)BrNO(2) was elucidated.
    • No significant pi-pi or C-H...pi interactions were detected.

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  • A single weak Br...Br interaction (3.715 Å) was the only notable intermolecular force.

    • Conclusions:

    • The crystal packing of C(8)H(8)BrNO(2) is primarily characterized by weak intermolecular forces.
    • The absence of stronger interactions suggests unique solid-state properties.