Angeli’s salt is regarded as a classical nitroxyl (NO-) donor, but under certain conditions evolution of NO is also observed.1 It spontaneously dissociates in a pH-dependent, first-order process with a half-life of 2.3 minutes at 37°C (pH 7.4) to liberate 0.54 moles of NO per mole of parent compound.[1],[2]
Angeli盐被认为是一种经典的硝基氧基（NO-）供体，但在某些条件下也观察到NO的进化。1它在37°C（pH 7.4）下以2.3分钟的半衰期自发离解，每摩尔母体化合物释放0.54摩尔NO。[1] ，[2]
Reference:
[1]. Maragos, C.M., Morley, D., Wink, D.A., et al. Complexes of ∙NO with nucleophiles as agents for the controlled biological release of nitric oxide. Vasorelaxant effects Journal of Medicinal Chemistry 34, 3242-3247 (1991).
[2]. Keefer, L.K., Nims, R.W., Davies, K.M., et al. “NONOates” (1-substituted diazen-1-ium-1,2-diolates) as nitric oxide donors: Convenient nitric oxide dosage forms Methods in Enzymology 268, 281-293 (1996