Zobrazeno 1 - 10 of 22 pro vyhledávání: '"Taketsune Miyahara"'
1
Separation of 17 -Amino Acids and Chiral Sequential Analysis of Peptides by Reversed-Phase Liquid Chromatography after Labeling with R(−)-4- (3-Isothiocyanatopyrrolidin-1-yl)-7-(N,N-dimethylaminosulfonyl)-2,1,3-benzoxadiazole
Autor: Taketsune Miyahara, Toshimasa Toyo'oka, Nobue Tomoi, Tomoyuki Oe
Publikováno v: Analytical Biochemistry. 276:48-58
Seventeen dl -amino acids labeled with a fluorescent chiral labeling reagent, R(−)-4-(3-isothiocyanatopyrrolidin-1-yl)-7-(N,N-dimethylaminosulfonyl)-2,1,3-benzoxadiazole (R(−)-DBD-PyNCS), were separated by reversed-phase chromatography and detect
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::471f81a40fa350dfd7405684228c530f
https://doi.org/10.1006/abio.1999.4307
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2
Determination ofd-Amino Acids Labeled with Fluorescent Chiral Reagents,R(−)- andS(+)-4-(3-Isothiocyanatopyrrolidin-1-yl)-7- (N,N-dimethylaminosulfonyl)-2,1,3-benzoxadiazoles, in Biological and Food Samples by Liquid Chromatography
Autor: Dongri Jin, Tomoyuki Oe, Taketsune Miyahara, Toshimasa Toyo'oka
Publikováno v: Analytical Biochemistry. 269:124-132
D-Amino acids in food and biological samples labeled with R(-)- and S(+)-4-(3-isothiocyanatopyrrolidin-1-yl)-7-(N, N-dimethylaminosulfonyl)-2,1,3-benzoxadiazoles (DBD-PyNCS) were separated by reversed-phase chromatography and detected fluorometricall
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ab3aec116ef67c367eb926baa0c3221
https://doi.org/10.1006/abio.1998.3090
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3
On-line screening method for antioxidants by liquid chromatography with chemiluminescence detection
Autor: Toshimasa Toyo′oka, Hisayuki Tanizawa, Ayako Ogawa, Hisako Arai, Taketsune Miyahara
Publikováno v: Analytica Chimica Acta. 383:221-230
A novel screening method for individual antioxidants in complex matrices was developed. The determination of antioxidants is based on the decrease of chemiluminescence (CL) intensity derived from luminol and superoxide anion radical (O −⋅ 2 ) whi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e99faac89a5bd8e123c0935306153e39
https://doi.org/10.1016/s0003-2670(98)00747-8
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4
Total resolution of 17 dl-amino acids labelled with a fluorescent chiral reagent, R(−)-4-(3-isothiocyanatopyrrolidin-1-yl)-7-(N,N-dimethylaminosulfonyl)-2,1,3-benzoxadiazole, by high-performance liquid chromatography
Autor: Sumiyo Murofushi, Dongri Jin, Kayoko Nagakura, Taketsune Miyahara, Toshimasa Toyo'oka
Publikováno v: Journal of Chromatography A. 822:215-224
Total resolution of 17 DL-amino acids after derivatization with a fluorescent chiral tagging reagent, 4-(3-isothiocyanatopyrrolidin-1-yl)-7-(N,N-dimethylaminosulfony l)-2,1,3- benzoxadiazole [R(-)-DBD-PyNCS], was studied by reversed-phase liquid chro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a2374bc5f615f29606a8ed55fb74ffa
https://doi.org/10.1016/s0021-9673(98)00617-7
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6
Rapid and simple determination of mercury in traditional Chinese medicines by amalgamgravimetry
Autor: Hisayo Kitamura, Taketsune Miyahara, Mitsuo Uchida, Kusuo Narita, MuYun Ni, Kiyo Yamamoto
Publikováno v: BUNSEKI KAGAKU. 42:T7-T11
水銀の分析法は環境汚染物質を対象とするものに重点がおかれ,医薬品中の水銀を精度よく定量することは困難である.試料を熱分解し,生じた水銀蒸気をアマルガムとして捕集する重量法
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b6bf4a1ba951905e50c0b565ec9514a7
https://doi.org/10.2116/bunsekikagaku.42.t7
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8
Precise and accurate determination of halogens in organic compounds using an amalgamated gold electrode
Autor: Taketsune Miyahara, Hisayo Kitamura, Kusuo Narita, Kiyo Yamamoto
Publikováno v: Microchemical Journal. 41:156-163
Precise and accurate titration of halogens in organic and inorganic materials has been studied. The halogen was titrated with coulometrically generated silver and determined potentiometrically by using an amalgamated gold indicator electrode. An arge
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3aa7a7e18a79f9568ef8de707cfa8de2
https://doi.org/10.1016/0026-265x(90)90114-k
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9
Detection of triazolam and its hydroxy metabolites in rat hair by reversed-phase liquid chromatography with electrospray ionization mass spectrometry
Autor: Yuji Nakahara, Taketsune Miyahara, Tomoyuki Oe, Masayoshi Kanbori, Yusuke Kumaki, Toshimasa Toyo'oka
Publikováno v: Scopus-Elsevier
A sensitive method using reversed-phase liquid chromatography coupled with electrospray ionization mass spectrometry (LC-ESI-MS) for simultaneous determination of triazolam (TZ) and its hydroxy metabolites in hair has been developed. After the additi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e813e01f6bd89478b09cb7be1163bd2
https://pubmed.ncbi.nlm.nih.gov/10774539
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10
Studies of Stability Constants of Several Metal Complexes with N-(2-Naphthyl)ethylenediamine-N, N, N-triacetic Acid
Autor: Taketsune Miyahara, Kusuo Narita, Yoshio Takino
Publikováno v: Chemical and Pharmaceutical Bulletin. 39:2140-2142
Stability constants of Cd(II), Cu(II), Hg(II), Pb(II) and Zn(II) chelates with N-(2-naphthyl)ethylenediamine-N, N', N'-triacetic acid (NEDTA) were determined by spectrophotometric and fluorophotometric methods at 25±1°C. The composition of the NEDT
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2dd3f89065be82ab865f9ccea778e37c
https://doi.org/10.1248/cpb.39.2140
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