3-(4-Hydroxy-3-methoxyphenyl)acrylic acid–2,3,5,6-tetramethylpyrazine (2/1)
نویسندگان
چکیده
منابع مشابه
Urinary 4-hydroxy-3-methoxymandelic (vanillylmandelic) acid, 4-hydroxy-3-methoxyphenylacetic (homovanillic) acid, and 5-hydroxy-3-indoleacetic acid determined by liquid chromatography with electrochemical detection.
We describe a simple liquid-chromatographic assay of urinary 4-hydroxy-3-methoxymandelic (vanillylmandelic) acid, 4-hydroxy-3-methoxyphenylacetic (homovanillic) acid, and 5-hydroxy-3-indoleacetic acid with electrochemical detection, with direct injection of the sample. The first two analytes are measured simultaneously; 5-hydroxy-3-indoleacetic acid is measured separately. Chromatographic condi...
متن کاملSimultaneous liquid-chromatographic analysis for 4-hydroxy-3-methoxymandelic acid and 4-hydroxy-3-methoxyphenylacetic acid in urine.
We describe a rapid, reliable "high-performance" liquid-chromatographic method of simultaneously analyzing for 4-hydroxy-3-methoxymandelic acid (I) and 4-hydroxy-3-methoxyphenylacetic acid (II) in urine. Paired-ion chromatography and amperometric detection are used in the method. A 5-mL aliquot of urine is adjusted to pH 6.1 and subjected to anion-exchange chromatography (Dowex AG 1-X4, 1.8 X 0...
متن کاملSimultaneous quantitation of 4-hydroxy-3-methoxymandelic (vanilmandelic) and 4-hydroxy-3-methoxyphenylacetic (homovanillic) acids in human urine.
We describe a simultaneous analysis for vanilmandelic and homovanillic acids in urine. An aliquot of a final extract, containing phenylpropriopionic acid as external standard, is dried, an internal standard (resorcinol) is added, and the mixture is silylated and chromatographed. The two compounds are identified from their characteristic retention times and from their elution behhavior in relati...
متن کاملSynthesis of 4-Pyridone-3-sulfate and an improved synthesis of 3-Hydroxy-4-Pyridone
An improved synthesis of 3-hydroxy-4-pyridone via an Elbs oxidation of 4-pyridone and isolation of 4-pyridone-3-sulfate is described.
متن کاملRational Design, Synthesis and Computational Structure-Activity Relationship of Novel 3-(4-Chlorophenyl)-5-(3-Hydroxy-4-Ethoxyphenyl)-4,5-Dihydro-1H-Pyrazole-1-Carboxamide
Densely functionalized 3-(4-chlorophenyl)-5-(3-hydroxy-4-etoxyphenyl)-4,5-dihydro-1H-pyrazole-1-carboxamide was synthesized in an expedient manner through specification and transamidation respectively, of ester-functionalized pyrazoles. This synthetic protocol allowed for three diversifying steps in which appendages on the pyrazole scaffold were adjusted to optimize inhibition of protein kina...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2011
ISSN: 1600-5368
DOI: 10.1107/s1600536811000961