Ultrafast magic angle spinning solid-state NMR spectroscopy: Advances in methodology and applications

Y Nishiyama, G Hou, V Agarwal, Y Su… - Chemical …, 2022 - ACS Publications
Solid-state NMR spectroscopy is one of the most commonly used techniques to study the
atomic-resolution structure and dynamics of various chemical, biological, material, and …

[HTML][HTML] Solid-state NMR spectroscopy in pharmaceutical sciences

M Li, W Xu, Y Su - TrAC Trends in Analytical Chemistry, 2021 - Elsevier
Solid-state NMR (ssNMR) spectroscopy analyzes a wide range of pharmaceutical materials
in a non-disruptive and non-invasive manner. The obtained molecular properties at …

Molecular interactions in posaconazole amorphous solid dispersions from two-dimensional solid-state NMR spectroscopy

X Lu, C Huang, MB Lowinger, F Yang, W Xu… - Molecular …, 2019 - ACS Publications
Molecular interactions between the active pharmaceutical ingredient and polymer have
potentially substantial impacts on the physical stability of amorphous solid dispersions …

Opportunities and Challenges in Applying Solid‐State NMR Spectroscopy in Organic Mechanochemistry

IAA Silva, E Bartalucci, C Bolm… - Advanced Materials, 2023 - Wiley Online Library
In recent years it is shown that mechanochemical strategies can be beneficial in directed
conversions of organic compounds. Finding new reactions proved difficult, and due to the …

[HTML][HTML] Role of crystal disorder and mechanoactivation in solid-state stability of pharmaceuticals

J Iyer, M Brunsteiner, D Modhave, A Paudel - Journal of Pharmaceutical …, 2023 - Elsevier
Common energy-intensive processes applied in oral solid dosage development, such as
milling, sieving, blending, compaction, etc. generate particles with surface and bulk crystal …

Quantifying Micromolar Crystallinity in Pharmaceutical Materials Utilizing 19F Solid-State NMR

Y Du, P Phyo, M Li, B Sorman, M McNevin… - Analytical …, 2022 - ACS Publications
Quantifying low-level components in solid-state analysis presents a significant challenge for
most thermal, diffractometric, vibrational, and spectroscopic techniques. In pharmaceutical …

Probing molecular packing of amorphous pharmaceutical solids using x-ray atomic pair distribution function and solid-state NMR

Z Chen, H Nie, CJ Benmore, PA Smith… - Molecular …, 2023 - ACS Publications
The structural investigation of amorphous pharmaceuticals is of paramount importance in
comprehending their physicochemical stability. However, it has remained a relatively …

19F Solid-state NMR characterization of pharmaceutical solids

Y Du, Y Su - Solid State Nuclear Magnetic Resonance, 2022 - Elsevier
Solid-state NMR has been increasingly recognized as a high-resolution and versatile
spectroscopic tool to characterize drug substances and products. However, the analysis of …

Three-dimensional NMR spectroscopy of fluorinated pharmaceutical solids under ultrafast magic angle spinning

X Lu, D Skomski, KC Thompson, MJ McNevin… - Analytical …, 2019 - ACS Publications
High-resolution solid-state analysis of multicomponent molecular systems, eg,
pharmaceutical formulations, is a great challenge. Solid-state nuclear magnetic resonance …

Optimizing solvent selection and processing conditions to generate high bulk-density, co-precipitated amorphous dispersions of posaconazole

D Frank, L Schenck, A Koynov, Y Su, Y Li… - Pharmaceutics, 2021 - mdpi.com
Co-precipitation is an emerging method to generate amorphous solid dispersions (ASDs),
notable for its ability to enable the production of ASDs containing pharmaceuticals with …