Potassium superoxide
Potassium superoxide structure
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Common Name | Potassium superoxide | ||
|---|---|---|---|---|
| CAS Number | 12030-88-5 | Molecular Weight | 71.09710 | |
| Density | 2,14 g/cm3 | Boiling Point | N/A | |
| Molecular Formula | KO2 | Melting Point | 400 °C | |
| MSDS | Chinese USA | Flash Point | N/A | |
| Symbol |
GHS03, GHS05 |
Signal Word | Danger | |
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[Paramagnetic calcium melanins].
Biofizika 58(1) , 47-53, (2013) Treatment of catechol, pyrogallol, DOPA, dopamine, norepinephrine, and natural polyhydroxy-1,4-naphthoquinone echinochrome by aqueous solution of potassium superoxide (KO2) in the presence of CaCl2 leads to the formation of water-insoluble dark pigments with ... |
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Comparative analysis of antioxidant, antimicrobiological and cytotoxic activities of native and fermented chamomile ligulate flower extracts.
Planta 242 , 721-32, (2015) The work investigated differences in apigenin content, as well as in other compounds, and examined the chemical profiles, antioxidant, antimicrobial and cytotoxic effects of extracts obtained from native and fermented chamomile ligulate flowers. Chamomile (Ch... |
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Role of 20-HETE in the hypoxia-induced activation of Ca2+-activated K+ channel currents in rat cerebral arterial muscle cells.
Am. J. Physiol. Heart Circ. Physiol. 294(1) , H107-20, (2008) The mechanism of sensing hypoxia and hypoxia-induced activation of cerebral arterial Ca(2+)-activated K(+) (K(Ca)) channel currents and vasodilation is not known. We investigated the roles of the cytochrome P-450 4A (CYP 4A) omega-hydroxylase metabolite of ar... |
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Antiproliferative effects of mitochondria-targeted cationic antioxidants and analogs: Role of mitochondrial bioenergetics and energy-sensing mechanism.
Cancer Lett. 365 , 96-106, (2015) One of the proposed mechanisms for tumor proliferation involves redox signaling mediated by reactive oxygen species such as superoxide and hydrogen peroxide generated at moderate levels. Thus, the antiproliferative and anti-tumor effects of certain antioxidan... |
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GC-MS and HPLC methods for peroxynitrite (ONOO- and O15NOO-) analysis: a study on stability, decomposition to nitrite and nitrate, laboratory synthesis, and formation of peroxynitrite from S-nitrosoglutathione (GSNO) and KO2.
Analyst 136(5) , 979-87, (2011) Nitric oxide (˙NO) and superoxide (O(2)(-)˙) are ubiquitous in nature. Their reaction product peroxynitrite (ONOO(-)) and notably its conjugated peroxynitrous acid (ONOOH) are highly unstable in aqueous phase. ONOO(-)/ONOOH (referred to as peroxynitrite) isom... |
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Reduced fluoresceinamine as a fluorescent sensor for nitric oxide.
Sensors (Basel.) 10(3) , 1661-9, (2010) A new fluorescent sensor for nitric oxide (NO) is presented that is based on its reaction with a non fluorescent substance, reduced fluoresceinamine, producing the highly fluorescent fluoresceinamine. Using a portable homemade stabilized light source consisti... |
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Superoxide anion reacts with enzyme intermediate in the bacterial luciferase reaction competitive with intramolecular electron transfer.
J. Biolumin. Chemilumin. 12(1) , 15-20, (1997) Addition of KO2 in dimethyl sulfoxide (DMSO) to the in vitro bacterial luciferase reaction subsequent to its initiation resulted in a biphasic decay of light emission. The first and more rapid phase is attributed to quenching by DMSO. With DMSO alone the cont... |
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Radical scavenging by N-aminoazaaromatics.
Bioorg. Med. Chem. 8(8) , 1983-9, (2000) N-Aminoazaaromatics were found to react with nitric oxide in the presence of oxygen to afford deaminated products in high yields. The reaction proceeded almost instantaneously in various solvents including water, and one to two equivalent of NO was consumed d... |
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Superoxide anion radical mediated dissection of rat sperm: an in vitro study.
Arch. Androl. 39(2) , 101-4, (1997) Sperm is highly sensitive to superoxide radical surge in the granuloma interior. To investigate possibility of a superoxide radical bomb, the role of an oxyradical on the spermatozoon was studied in vitro using potassium superoxide, a potent superoxide radica... |
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Evaluation of the probe dihydrocalcein acetoxymethylester as an indicator of reactive oxygen species formation and comparison with oxidative DNA base modification determined by modified alkaline elution technique.
Toxicol. In Vitro 21(8) , 1552-62, (2007) Reactive oxygen species (ROS) play a predominant role in various diseases and the development of fast and easy methods for the quantification of intracellular ROS represents an important goal. Therefore, the aim of the present study was the evaluation of the ... |