Author

Shoujiro Ogawa

Observed names: Ogawa, Shoujiro, Shoujiro OGAWA

Observed institutions: Nihon University, Tokyo University of Science, Tohoku University, University of California San Diego, Fukuyama University, Tohoku University Hospital

ORCID: 0000-0001-6767-5908

Observed ORCID: 0000-0001-6767-5908

OpenAlex ID: A5014254992

Chemical derivatization for enhancing sensitivity during LC/ESI–MS/MS quantification of steroids in biological samples: a review

2015 · Tatsuya Higashi, Shoujiro Ogawa · The Journal of Steroid Biochemistry and Molecular Biology · 105

Unconjugated bile acids in rat brain: Analytical method based on LC/ESI-MS/MS with chemical derivatization and estimation of their origin by comparison to serum levels

2017 · Tatsuya Higashi, Shui Watanabe, et al. · Steroids · 102

Isotope-coded ESI-enhancing derivatization reagents for differential analysis, quantification and profiling of metabolites in biological samples by LC/MS: A review

2016 · Tatsuya Higashi, Shoujiro Ogawa · Journal of Pharmaceutical and Biomedical Analysis · 88

A novel Cookson‐type reagent for enhancing sensitivity and specificity in assessment of infant vitamin D status using liquid chromatography/tandem mass spectrometry

2013 · Shoujiro Ogawa, Satoshi Ooki, et al. · Rapid Communications in Mass Spectrometry · 65

Development and validation of the simultaneous measurement of four vitamin D metabolites in serum by LC–MS/MS for clinical laboratory applications

2016 · Mamoru Satoh, Takayuki Ishige, et al. · Analytical and Bioanalytical Chemistry · 47

Analysis of urinary vitamin D3 metabolites by liquid chromatography/tandem mass spectrometry with ESI-enhancing and stable isotope-coded derivatization

2014 · Shoujiro Ogawa, Satoshi Ooki, et al. · Analytical and Bioanalytical Chemistry · 44

Development and validation of a method for determination of plasma 25-hydroxyvitamin D3 3-sulfate using liquid chromatography/tandem mass spectrometry

2014 · Tatsuya Higashi, Ayaka Goto, et al. · Journal of Chromatography B · 41

Detection of Δ4-3-oxo-steroid 5β-reductase deficiency by LC–ESI-MS/MS measurement of urinary bile acids

2012 · Akina Muto, Hajime Takei, et al. · Journal of Chromatography B · 41

Regioselective Oxyfunctionalization of Unactivated Carbons in Steroids by a Model of Cytochrome P-450: Osmiumporphyrin Complex/tert-Butyl Hydroperoxide System

2007 · Takashi Iida, Shoujiro Ogawa, et al. · The Journal of Organic Chemistry · 38

Enantioselective determination of ibuprofen in saliva by liquid chromatography/tandem mass spectrometry with chiral electrospray ionization-enhancing and stable isotope-coded derivatization

2014 · Shoujiro Ogawa, Hiroaki Tadokoro, et al. · Journal of Pharmaceutical and Biomedical Analysis · 36

(S)-1-(4-Dimethylaminophenylcarbonyl)-3-aminopyrrolidine: A derivatization reagent for enantiomeric separation and sensitive detection of chiral carboxylic acids by LC/ESI-MS/MS

2013 · Shoujiro Ogawa, Hiroaki Tadokoro, et al. · Journal of Chromatography B · 36

LC/ESI‐MS/MS method for determination of salivary eicosapentaenoic acid concentration to arachidonic acid concentration ratio

2015 · Shoujiro Ogawa, Koki Tomaru, et al. · Biomedical Chromatography · 34

Methods for determination of fingernail steroids by LC/MS/MS and differences in their contents between right and left hands

2016 · Tatsuya Higashi, Kenichiro Yamagata, et al. · Steroids · 28

Methods for differential and quantitative analyses of brain neurosteroid levels by LC/MS/MS with ESI-enhancing and isotope-coded derivatization

2015 · Tatsuya Higashi, Naoto Aiba, et al. · Journal of Pharmaceutical and Biomedical Analysis · 27

Derivatization-based sample-multiplexing for enhancing throughput in liquid chromatography/tandem mass spectrometry quantification of metabolites: an overview

2020 · Tatsuya Higashi, Shoujiro Ogawa · Journal of Chromatography A · 25

Oxyfunctionalization of unactivated C–H bonds in triterpenoids with tert-butylhydroperoxide catalyzed by meso-5,10,15,20-tetramesitylporphyrinate osmium(II) carbonyl complex

2009 · Shoujiro Ogawa, Yasuo Wakatsuki, et al. · Chemistry and Physics of Lipids · 25

Quantification of ergothioneine in Aspergillus oryzae-fermented rice bran by a newly-developed LC/ESI-MS/MS method

2019 · Yukiko Horie, Ayaka Goto, et al. · LWT · 24

A method for determination of aldosterone in adrenal tributary venous serum by derivatization using Girard P reagent isotopologues followed by LC/ESI-MS/MS

2018 · Tatsuya Higashi, Miho Akaishi, et al. · Journal of Chromatography B · 23

Isotope-coded derivatization based LC/ESI-MS/MS methods using a pair of novel reagents for quantification of hydroxycinnamic acids and hydroxybenzoic acids in fermented brown rice product

2017 · Shoujiro Ogawa, Kiriko Takafuji, et al. · Journal of Pharmaceutical and Biomedical Analysis · 23

The remote-oxyfunctionalization of unactivated carbons in (5β)-3-oxobile acids by 2,6-dichloropyridine N-oxide catalyzed by ruthenium–porphyrin and HBr: a direct lactonization at C-20

2004 · Shoujiro Ogawa, Takashi Iida, et al. · Organic & Biomolecular Chemistry · 23

Derivatization of chiral carboxylic acids with ( S )‐anabasine for increasing detectability and enantiomeric separation in LC / ESI ‐ MS / MS

2012 · Tatsuya Higashi, Megumi Kawasaki, et al. · Journal of Separation Science · 22

Enhancing LC/ESI-MS/MS Throughput for Plasma Bile Acid Assay by Derivatization-based Sample-Multiplexing

2020 · Akihiro Jo, Sae Koyagi, et al. · Analytical Sciences · 21

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Changes in Polyamine Content in Rice Bran due to Fermentation with Aspergillus oryzae Analyzed by LC/ESI-MS/MS Combined with Derivatization

2018 · Yukiko Horie, Ayaka Goto, et al. · Analytical Sciences · 21

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A facile synthesis of C-24 and C-25 oxysterols by in situ generated ethyl(trifluoromethyl)dioxirane

2008 · Shoujiro Ogawa, Genta Kakiyama, et al. · Steroids · 21

Osmiumporphyrin‐Catalyzed Oxyfunctionalization and Isomerization of Natural (5β)‐Bile Acids with tert‐Butyl Hydroperoxide

2007 · Shoujiro Ogawa, Keiji Hosoi, et al. · European Journal of Organic Chemistry · 21

Works count: 82

Citation count: 1,393

H-index: 21

I10-index: 44