Search Results - "OHKURA, Yosuke"

A combined assay of cell viability and in vitro cytotoxicity with a highly water-soluble tetrazolium salt, neutral red and crystal violet by ISHIYAMA, M, TOMINAGA, H, SHIGA, M, SASAMOTO, K, OHKURA, Y, UENO, K

“…Cell viability and in vitro cytotoxicity assay methods were developed using a combination of dyes,…”
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Aromatic glycinonitriles and methylamines as pre-column fluorescence derivatization reagents for catecholamines by Nohta, Hitoshi, Yukizawa, Tomoyuki, Ohkura, Yosuke, Yoshimura, Makoto, Ishida, Junichi, Yamaguchi, Masatoshi

“…The reactivity of some catecholamines with aromatic glycinonitriles (AGN) (four species) and aromatic methylamines (AMA) (five species) was investigated in…”
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High-performance liquid chromatography of plasma catecholamines using 1,2-diphenylethylenediamine as precolumn fluorescence derivatization reagent by Mitsui, A, Nohta, H, Ohkura, Y

“…A simple, rapid and highly sensitive method for the determination of catecholamines (norepinephrine, epinephrine and dopamine) in human plasma is described…”
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Chemiluminescence Assay for β-d-Galactosidase Using 6-(Alkylamino)phthalylhydrazido-ß-d)-galactosides by Yoshida, Hideyuki, Nohta, Hitoshi, Ohkura, Yosuke, Zaitsu, Kiyoshi

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Second Japan-Korea Joint Symposium on Analytical Chemistry by OHKURA, Yosuke

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New fluorogenic substrates for horseradish peroxidase: rapid and sensitive assays for hydrogen peroxide and the peroxidase by Zaitsu, K, Ohkura, Y

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Precolumn Fluorescence Derivatization of Carboxylic Acids Using 4-Aminomethyl-6, 7-dimethoxycoumarin in a Two-Phase Medium by SASAMOT, Kazumi, USHIJIMA, Tamano, SAITO, Mikihiko, OHKURA, Yosuke

“…A new coumarin-based amine, 4-aminomethyl-6, 7-dimethoxycoumarin, was synthesized as a precolumn fluorescence derivatization reagent for carboxylic acids. The…”
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High Performance Liquid Chromatography of Bioactive Substances Using Bifunctional Fluorogenic Reagents for Derivatization A Review by OHKURA, Yosuke

“…Pre- and postcolumn derivatization methods employing recently-developed bifunctional fluorogenic reagents for high performance liquid chromatography have been…”
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A highly water-soluble disulfonated tetrazolium salt as a chromogenic indicator for NADH as well as cell viability by Ishiyama, Munetaka, Miyazono, Yoko, Sasamoto, Kazumi, Ohkura, Yosuke, Ueno, Keiyu

“…A highly water soluble disulfonated tetrazolium salt, 4-[3-(2-methoxy-4-nitrophenyl)-2-(4-nitrophenyl)-2H-5-tetrazolio]-1,3-benzene disulfonate sodium salt,…”
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High-Performance Liquid-Chromatographic Determination of Guanosine 3′, 5′-Cyclic Monophosphate in Human Urine with Fluorescence Detection Using 3, 4-Dimethoxyphenylglyoxal by OHBA, Yoshihito, KAI, Masaaki, OHKURA, Yosuke, ZAITSU, Kiyoshi

“…A sensitive and selective method for the determination of guanosine 3′, 5′-cyclic monophosphate in human urine is described. The method uses high-performance…”
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Determination of a Biguanide Metformin, by High-Performance Liquid Chromatography with Precolumn Fluorescence Derivatization by OHTA, Mutsuko, IWASAKI, Masatake, KAI, Masaaki, OHKURA, Yosuke

“…A sensitive method is described for determining a biguanide drug, metformin, by high-performance liquid chromatography with precolumn fluorescence…”
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Benzothiazole-containing tetrazolium salts that produce water-soluble formazan dyes absorbing at a long wavelength upon NADH reduction by ISHIYAMA, M, MIYAZONO, Y, SHIGA, M, SASAMOTO, K, OHKURA, Y, UENO, K

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Chemiluminescence Assay for β-D-Galactosidase Using 6-(Alkylamino)phthalylhydrazido-β-D-galactosides by YOSHIDA, Hideyuki, NOHTA, Hitoshi, OHKURA, Yosuke, ZAITSU, Kiyoshi

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Fluorometric determination of tryptophan in human serum using phenylglyoxal by KOJIMA, E, KAI, M, OHKURA, Y

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High-Performance Liquid Chromatographic Determination of Guanine and Its Nucleosides and Nucleotides in Biospecimens with Precolumn Fluorescence Derivatization Using Phenylglyoxal by YONEKURA, Sayuri, IWASAKI, Masatake, KAI, Masaaki, OHKURA, Yosuke

“…High-performance liquid chromatographic determination of guanine and its nucleosides and nucleotides in rat brain tissue and human erythrocytes has been…”
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ASIANALYSIS II by TAKAGI, Makoto, OHKURA, Yosuke

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2-(5-Hydrazinocarbonyl-2-furyl)-5, 6-dimethoxybenzothiazole as a Precolumn Fluorescence Derivatization Reagent for Carboxylic Acids in High-Performance Liquid Chromatography and Its Application to the Assay of Fatty Acids in Human Serum by SAITO, Mikihiko, USHIJIMA, Tamano, SASAMOTO, Kazumi, OHKURA, Yosuke, UENO, Keiyu

“…A precolumn fluorescence derivatization reagent for carboxylic acids, 2-(5-hydrazinocarbonyl-2-furyl)-5, 6-dimethoxybenzothiazole, was developed and its…”
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A Practical Reagent for Reversible Amino-Protection of Insulin, 3, 4, 5, 6-Tetrahydrophthalic Anhydride by KIMURA, Yoshitada, ZAITSU, Kiyoshi, MOTOMURA, Yuji, OHKURA, Yosuke

“…Of the examined dicarboxylic acid anhydrides, 3, 4, 5, 6-tetrahydrophthalic anhydride was found to be the best reagent in practical use for reversible…”
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Simultaneous high-performance liquid chromatographic determination of catecholamine-related compounds by post-column derivatization involving coulometric oxidation followed by fluorescence reaction by Nohta, H, Yamaguchi, E, Ohkura, Y, Watanabe, H

“…A highly selective and sensitive high-performance liquid chromatographic method for the determination of catecholamines (norepinephrine, epinephrine and…”
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High-Performance Liquid Chromatographic Determination of Ribonucleosides and 2′-Deoxyribonucleosides Based on Precoiumn Fluorescence Derivatization of the Sugar Moieties by Nagaoka, Hiroaki, Nohta, Hitoshi, Saito, Mikihiko, Ohkura, Yosuke

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