6,7-Dimethoxy-1-methyl-2(1H)-quinoxalinone-3-propionylcarboxylic acid hydrazide: a highly sensitive fluorescence derivatisation reagent for carboxylic acids in high-performance liquid chromatography

Masatoshi Yamaguchi, Tetsuharu Iwata, Kouji Inoue, +2

The Analyst

Lipid AnalysisEngineering-Quinoxalinone-3-propionylcarboxylic Acid HydrazideOrganic ChemistryChemical Derivative +20

3,4-dihydro-6,7-dimethoxy-4-methyl-3-oxoquinoxaline-2-carbonyl chloride as a sensitive fluorescence derivatization reagent for amines in liquid chromatography

Junichi Ishida, Masatoshi Yamaguchi, Tetsuharu Iwata, +1

Analytica Chimica Acta

Derivative (Chemistry)EngineeringBiochemistryMedicineOrganic Chemistry +8

3,4-dihydro-6,7-dimethoxy-4-methyl-3-oxo-quinoxaline-2-carbonyl chloride as a highly sensitive fluorescence derivatization reagent for alcohols in high-performance liquid chromatography

Tetsuharu Iwata, Masatoshi Yamaguchi, Shuuji Hara, +2

Journal of Chromatography A

EngineeringBiochemistrySeparation ScienceMedicineOrganic Chemistry +9

Simple and highly sensitive determination of free fatty acids in human serum by high performance liquid chromatography with fluorescence detection

Tetsuharu Iwata, Kouji Inoue, Masaru Nakamura, +1

Biomedical Chromatography

Lipid AnalysisFluorescence DetectionEngineeringBiochemistryGas Chromatography +13

3,4-dihydro-6,7-dimethoxy-4-methyl-3-oxo-qinoxaline-2-carbonyl azide as a highly sensitive fluorescence derivatization reagent for primary, secondary and tertiary alcohols in high-performance liquid chromatography

Masatoshi Yamaguchi, Tetsuharu Iwata, Masaru Nakamura, +1

Analytica Chimica Acta

3,4-Dihydro-6,7-dimethoxy-4-methyl-3-oxo-qinoxaline-2-carbonyl AzideEngineeringBiochemistryMedicineOrganic Chemistry +9

Determination of total ascorbic acid in human serum by high-performance liquid chromatography with fluorescence detection

Tetsuharu Iwata, Masatoshi Yamaguchi, Shuuji Hara, +2

Journal of Chromatography B Biomedical Sciences and Applications

Fluorescence DetectionBiochemistryTotal Ascorbic AcidMedicineGas Chromatography +8

4-(1-Methylphenanthro[9,10-d]imidazol-2-yl)-benzohydrazide as derivatization reagent for carboxylic acids in high-performance liquid chromatography with conventional and laser-induced fluorescence detection

Tetsuharu Iwata, Tsuyoshi Hirose, Masaru Nakamura, +1

The Analyst

EngineeringOrganic ChemistryChemical DerivativeGas ChromatographyFatty Acids +15

Fluorimetric determination of α-keto acids with 4,5-dimethoxy-1,2-diaminobenzene and its application to high-performance liquid chromatography

Shuuji Hara, Yasuyo Takemori, Tetsuharu Iwata, +3

Analytica Chimica Acta

Chemical MeasurementEngineeringBiochemistryα-Keto AcidsMedicine +10

4-(5,6-Dimethoxy-2-benzimidazoyl)benzohydrazide as Fluorescence Derivatization Reagent for Carboxylic Acids in High-Performance Liquid Chromatography

Tetsuharu Iwata, Masaru Nakamura, Masatoshi Yamaguchi

Analytical Sciences

Carboxylic AcidsEngineeringBiochemistryChemical DerivativeOrganic Chemistry +9

Determination of urinary glucuronide conjugates by high-performance liquid chromatography with pre-column fluorescence derivatization

Tetsuharu Iwata, Tsuyoshi Hirose, Masaru Nakamura, +1

Journal of Chromatography B Biomedical Sciences and Applications

Pre-column Fluorescence DerivatizationBiochemistryGas ChromatographyMedicineBioanalysis +11