Chika Hasegawa

Simultaneous determination of methamphetamine and amphetamine in human urine using pipette tip solid-phase extraction and gas chromatography–mass spectrometry

Takeshi Kumazawa, Chika Hasegawa, Xiao‐Pen Lee et al. · Journal of Pharmaceutical and Biomedical Analysis · 2007 · 102 citations

Human Urine, Gas Chromatography–mass Spectrometry, Medicine +11

Simultaneous determination of ten antihistamine drugs in human plasma using pipette tip solid‐phase extraction and gas chromatography/mass spectrometry

Chika Hasegawa, Takeshi Kumazawa, Xiao‐Pen Lee et al. · Rapid Communications in Mass Spectrometry · 2006 · 98 citations

Martefragin A, a Novel Indole Alkaloid Isolated from Red Alga, Inhibits Lipid Peroxidation.

Satoshi Takahashi, Takayuki Matsunaga, Chika Hasegawa et al. · Chemical and Pharmaceutical Bulletin · 1998 · 76 citations · Full text

Pipette tip solid-phase extraction and gas chromatography – mass spectrometry for the determination of methamphetamine and amphetamine in human whole blood

Chika Hasegawa, Takeshi Kumazawa, Xiao‐Pen Lee et al. · Analytical and Bioanalytical Chemistry · 2007 · 56 citations

Human Whole Blood, Gas Chromatography, Medicine +12

Quantitative determination of phenothiazine derivatives in human plasma using monolithic silica solid-phase extraction tips and gas chromatography–mass spectrometry

Takeshi Kumazawa, Chika Hasegawa, Seisaku Uchigasaki et al. · Journal of Chromatography A · 2011 · 56 citations

Gas Chromatography–mass Spectrometry, Chemical Measurement, Engineering +13