Ultra-clean pure shift NMR with optimal water suppression for analysis of aqueous pharmaceutical samples

Analyst. 2024 Apr 15;149(8):2227-2231. doi: 10.1039/d3an02150e.

Abstract

Pure shift NMR experiments greatly enhance spectral resolution by collapsing multiplet structures into singlets and, with water suppression, can be used for aqueous samples. Here, we combine ultra-clean pure-shift NMR (SAPPHIRE) with two different internally encoded water suppression schemes to achieve optimal performance for small molecule and macrocyclic peptide pharmaceuticals in water and acetonitrile-water mixtures.

MeSH terms

  • Magnetic Resonance Imaging*
  • Magnetic Resonance Spectroscopy
  • Pharmaceutical Preparations
  • Water*

Substances

  • Water
  • Pharmaceutical Preparations