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Mechanism of aerobic decomposition of Angeli's salt (sodium trioxodinitrate) at physiological pH.

Miranda KM, Dutton AS, Ridnour LA, Foreman CA, Ford E, Paolocci N, Katori T, Tocchetti CG, Mancardi D, Thomas DD, Espey MG, Houk KN, Fukuto JM, Wink DA.

Department of Chemistry, University of Arizona, Tucson, Arizona 85721, USA. kmiranda@email.arizona.edu

The recent determination that Angeli's salt may have clinical application as a nitrogen oxide donor for treatment of cardiovascular diseases such as heart failure has led to renewed interest in the mechanism and products of thermal decomposition of Angeli's salt under physiological conditions. In this report, several mechanisms are evaluated experimentally and by quantum mechanical calculations to determine whether HNO is in fact released from Angeli's salt in neutral, aerobic solution. The mechanism of product autoxidation is also considered.

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PMID: 15643898 [PubMed - indexed for MEDLINE]