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Related Concept Videos

Applications Of NMR In Biology01:25

Applications Of NMR In Biology

Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics  for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.
The...
NMR Spectrometers: Overview01:20

NMR Spectrometers: Overview

NMR spectrometers consist of a strong magnet, a radiofrequency transmitter, and a detector attached to a computer console for recording spectra of samples containing NMR-active nuclei. In first-generation NMR instruments called continuous-wave spectrometers, the resonance frequencies of the nuclei are determined by frequency-sweep or field-sweep methods. The magnetic field strength is fixed and the rf signal is swept in the former, while the radiofrequency signal is fixed and the magnetic field...
Chemical Shift: Internal References and Solvent Effects01:17

Chemical Shift: Internal References and Solvent Effects

In an NMR sample, precise measurement of the absolute absorption frequencies of nuclei is difficult. A standard internal reference compound is added, and the frequency difference between the reference signal and sample signals is measured.
The internal reference compound generally used in NMR spectroscopy is tetramethylsilane (TMS). TMS is preferred because it is chemically inert, soluble in NMR solvents, and easily removable. Also, the highly shielded methyl protons in TMS yield an intense...
Other Nuclides: 31P, 19F, 15N NMR01:16

Other Nuclides: 31P, 19F, 15N NMR

Many organic, inorganic, and biological molecules contain spin-half nuclei such as nitrogen-15, fluorine-19, and phosphorus-31. As a result, NMR studies of these nuclei have found extensive applications in chemical and biological research.
While fluorine-19 and phosphorous-31 have high natural abundances (100%) and positive gyromagnetic ratios, nitrogen-15 has a low natural abundance and a negative gyromagnetic ratio. However, nitrogen-15 is still preferred over nitrogen-14 (which has a high...
Nuclear Magnetic Resonance (NMR): Overview01:07

Nuclear Magnetic Resonance (NMR): Overview

Nuclear magnetic resonance (NMR) is a phenomenon exhibited by certain nuclei that can absorb characteristic radio frequency radiation under certain conditions. NMR has been extensively applied in molecular spectroscopy and medical diagnostic imaging. In both these applications, the molecule or subject under study is placed in a magnetic field and irradiated with radio frequency energy.
NMR spectroscopy generates a spectrum where the characteristic absorption frequencies of the sample are...
NMR Spectrometers: Resolution and Error Correction01:14

NMR Spectrometers: Resolution and Error Correction

When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...

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Updated: Jun 3, 2026

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
14:55

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

Published on: September 17, 2017

Evolution of solid-state NMR in pharmaceutical analysis.

Frederick G Vogt1

  • 1Chemical Development, GlaxoSmithKline plc., 709 Swedeland Road, King of Prussia, PA 19406, USA. fred.g.vogt@gsk.com

Future Medicinal Chemistry
|March 24, 2011
PubMed
Summary
This summary is machine-generated.

Solid-state Nuclear Magnetic Resonance (NMR) is now a vital tool in pharmaceutical analysis, offering detailed insights through advanced experiments. This review covers its evolution, sophisticated applications, and future potential in drug development.

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Last Updated: Jun 3, 2026

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
14:55

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

Published on: September 17, 2017

A Package of Established Analytical Tools to Investigate the Solid-State Alteration of Lipid-Based Excipients
11:27

A Package of Established Analytical Tools to Investigate the Solid-State Alteration of Lipid-Based Excipients

Published on: August 9, 2022

Area of Science:

  • Pharmaceutical Analysis
  • Solid-State Nuclear Magnetic Resonance (NMR) Spectroscopy

Background:

  • Solid-state NMR was once a niche technique in pharmaceutical analysis.
  • It has transformed into an essential, data-rich method.
  • Modern pharmaceutical analysis relies on advanced NMR techniques.

Purpose of the Study:

  • To review key developments in solid-state NMR for pharmaceutical analysis.
  • To highlight the increasing sophistication of NMR analyses in this field.
  • To discuss future directions and advancements in solid-state NMR applications.

Main Methods:

  • Review of literature on solid-state NMR applications in pharmaceuticals.
  • Analysis of sophisticated 1D and 2D NMR experiments.
  • Examination of evolving analytical strategies.

Main Results:

  • Solid-state NMR has evolved significantly, becoming more sophisticated.
  • Advanced 1D and 2D NMR experiments yield highly detailed analytical results.
  • The technique is now integral to comprehensive pharmaceutical analysis.

Conclusions:

  • Solid-state NMR is a powerful and evolving technique for pharmaceutical analysis.
  • Continued development promises even greater insights into drug substances and formulations.
  • The field is poised for further innovation in analytical methodologies.