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Tetramethylammonium Peroxynitrite

The yellow ONOO- ion can be made in pure form by passing NO through a solution of tetramethylammonium superoxide in ammonia56 ONOO from other syntheses can be contaminated by reactants and nitrate. ONOOH is a weak acid with a pKa near 6.8 and isomerizes to N03 and H+ in seconds.57 At pH 12 the anion is stable for several hours at 0°C. It occurs solely as the cis isomer, due to a partial double bond between N and the first peroxide O.58 Peroxynitrite is toxic in vivo it is formed through the diffusion-controlled reaction of 02 with NO-.57 ONOOH oxidizes via direct and indirect pathways.59 Under physiological conditions the main reaction partners for ONOO" and ONOOH appear to be carbon dioxide60 and thiols,61 respectively. The ONOO—C02—adduct nitrates tyrosines. [Pg.333]

See other pages where Tetramethylammonium Peroxynitrite is mentioned: [Pg.255]    [Pg.255]    [Pg.3]    [Pg.36]    [Pg.37]    [Pg.37]    [Pg.39]    [Pg.40]    [Pg.41]    [Pg.41]    [Pg.42]    [Pg.295]   
See also in sourсe #XX -- [ Pg.34 , Pg.40 ]



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