We present a novel nitroxyl (HNO) generation method, which avoids the need of using a liquid system or extreme experimental conditions. This method consists of the reaction between a gaseous base and an HNO donor (Piloty's acid) in the solid phase, allowing the formation of gaseous HNO in a fast and economical way. Detection of HNO was carried out indirectly, measuring the nitrous oxide (NO) byproduct of HNO dimerization using infrared spectroscopy, and directly, using mass spectrometry techniques and an electrochemical HNO sensor.
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http://dx.doi.org/10.1016/j.jinorgbio.2021.111535 | DOI Listing |
Anal Chim Acta
January 2025
College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450046, China. Electronic address:
Background: Nitroxyl (HNO) is an emerging signaling molecule that plays a significant regulatory role in various aspects of plant biology, including stress responses and developmental processes. However, understanding the precise actions of HNO in plants has been challenging due to the absence of highly sensitive and real-time in situ monitoring tools. Consequently, it is crucial to develop effective and accurate detection methods for HNO.
View Article and Find Full Text PDFAnal Chim Acta
November 2024
Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China. Electronic address:
Background: As an important reactive nitrogen species (RNS), HNO has been identified as an essential signaling molecule in many physiological processes. Ferroptosis produces a large amount of reactive oxygen species and reactive nitrogen species. However, the detailed mechanism of HNO during process of ferroptosis is rarely reported, especially in the near-infrared range.
View Article and Find Full Text PDFJ Pharm Sci
November 2024
Chemical Process Development, Global Product Development and Supply, Bristol Myers Squibb Company, New Brunswick, New Jersey, USA.
N-hydroxy-5-methylfuran-2-sulfonamide (BMS-986231, Cimlanod) was being developed as a pH-sensitive prodrug of HNO (nitroxyl) for the treatment of acute decompensated heart failure. During a stressed study of Cimlanod in a prototype formulation solution (pH 4.5) at 40°C, a predominant unknown degradant along with three previously identified degradants were observed.
View Article and Find Full Text PDFMolecules
August 2024
Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242, USA.
Photoactive -hydroxysulfonamides photocaged with the (6-bromo-7-hydroxycoumarin-4-yl)methyl chromophore have been successfully synthesized, and the mechanisms of photodecomposition investigated for two of the compounds. Upon irradiation up to 97% of a diagnostic marker for (H)NO release, sulfinate was observed for the trifluoromethanesulfonamide system. In the absence of a species that reacts rapidly with (H)NO, (H)NO instead reacts with the carbocation intermediate to ultimately generate ()-BHC-oxime and ()-BHC-oxime.
View Article and Find Full Text PDFDalton Trans
August 2024
Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, MI 48109, USA.
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