Spatiotemporal measurement using L-band ESR-CT system for water sonolysis in the presence of 1-Hydroxy-2,2,5,5-tetramethyl-3-imidazoline-3-oxide

ESR Spatiotemporal Measurement Using the Rapid Field Scan L-Band ESR-CT System for Determination of Rate Constants of Nitroxide Radical Reduction

The rate constants of nitroxide reduction by ascorbate ion were determined from a time-series measurement of ESR images, that is, ESR spatiotemporal images, which were measured with a rapid field scan L-band ESR-CT system. Two test tubes containing the phosphate buffer solutions of 3-carbamoyl-2,2,5,5-tetramethylpyrrolidin-l-yloxy (C-PROXYL) and ascorbate ion with different concentrations were ...

4,4,5,5-Tetramethyl-2-(4-pyridinio)imidazoline-1-oxyl-3-oxide chloride

The title compound C(12)H(17)N(3)O(2) (+)·Cl(-) consists of a discrete [NITpPyH](+) cation [NITpPy = 2-(4'-pyrid-yl)-4,4,5,5-tetra-methyl-imidazoline-1-oxyl-3-oxide] and a chloride anion. The NITpPy mol-ecule is protonated at the N atom of the pyridyl ring. The anions and cations are connected via N-H⋯Cl hydrogen bonds.

Convenient method for the synthesis of symmetrical disulfides using 1-butyl- 3-methylimidazolium hydroxide in water

Conversion of the Oncogenic 1-Methylguanine 3-Oxide to 3-Hydroxy-1-methylxanthine1

tion of 1-methylguanine 3-oxide was not observed (8). This observation, combined with the very low activity of 1-meth ylguanine 3-oxide as a substrate for sulfotransferase in an in vitro assay for activation (10), caused us to compare the metabolic fates of 1-methylguanine 3-oxide and 3-hydroxy 1-methylxanthine with their unmethylated parent 3-hydroxy purines to provide a better understanding o...

Conversion of the oncogenic 1-methylguanine 3-oxide to 3-hydroxy-1-methylxanthine.

Deamination of the oncogenic 1-methylguanine 3-oxide occurs to a significant extent in rats to yield 3-hydroxy-1-methylxanthine and its metabolites. When 3-hydroxy-1-methylxanthine is administered, 1-methyl-8-methylthioxanthine can be recovered from urine and released from hepatic protein. No 1-methyl-8-methylthioguanine was detected in urine or bound to protein. There is no evidence of signifi...