90109-92-5Relevant articles and documents
Kinetic characterisation of o-aminophenols and aromatic o-diamines as suicide substrates of tyrosinase
Munoz-Munoz, Jose Luis,Garcia-Molina, Francisco,Berna, Jose,Garcia-Ruiz, Pedro Antonio,Varon, Ramon,Tudela, Jose,Rodriguez-Lopez, Jose N.,Garcia-Canovas, Francisco
experimental part, p. 647 - 655 (2012/08/08)
We study the suicide inactivation of tyrosinase acting on o-aminophenols and aromatic o-diamines and compare the results with those obtained for the corresponding o-diphenols. The catalytic constants follow the order aromatic o-diamines max/KmS, follows this order: o-diphenols > o-aminophenols > aromatic o-diamines.
Bridged fluorescent dyes, their preparation and their use in assays
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, (2008/06/13)
Bridged fluorescent dyes of the cyanine and squaraine families are disclosed. The dyes are useful as markers in assay techniques and offer advantages of undergoing excitation at a common wavelength but emitting at structure dependent different wavelengths.
Kinetics of the Oxidation of Ascorbic Acid and Substituted 1,2- and 1,4-Dihydroxybenzenes by the Hexacyanoruthenate(III) Ion in Acidic Perchlorate Media
Hoddenbagh, J. Mark A.,Macartney, Donal H.
, p. 615 - 620 (2007/10/02)
The kinetics of oxidation of ascorbic acid and a series of substituted 1,2- and 1,4-dihydroxybenzene compounds (H2Q) by 3- have been investigated in acidic perchlorate media.The inverse dependences of the rate constants on acid concentrations for 2,3-dicyano-1,4-dihydroxybenzene, 4,5-dihydroxybenzene-1,3-disulphonate, and ascorbic acid have been attributed to concurrent rate-determining pathways involving the one-electron oxidations of H2Q or HQ(-) by 3- to the corresponding semiquinone or ascorbate radical intermediate.The cross-reaction rate constants have been correlated with the semiquinone or ascorbate reduction potentials in terms of the Marcus relationship to yield a 3--4- electron self-exchange rate constant of (1.0 +/- 0.8) . 105 dm3mol-1s-1.This is compared with those for other low-spin d5-d6 transition-metal complex couples and discussed in terms of the inner-sphere and solvent reorganization energies.
