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Journal of Chromatography. B, Biomedical Sciences and Applications|March 3, 1999
Determination of a cyclic hexapeptide, a novel antifungal agent, in human plasma by high-performance liquid chromatography with ion spray and turbo ion spray tandem mass spectrometric detectionC M Chavez-Eng, M Schwartz, M L Constanzer, et al.Pharmaceutical Research|November 26, 2013
Amiloride: biological fluid analysis by reverse-phase HPLCW C Vincek, G A Hessey Ii, M L Constanzer, et al.Journal of Chromatography. B, Biomedical Sciences and Applications|May 23, 1997
Low level determination of a novel 4-azasteroid and its carboxylic acid metabolite in human plasma and semen using high-performance liquid chromatography with atmospheric pressure chemical ionization tandem mass spectrometryM L Constanzer, C M Chavez, B K Matuszewski, et al.Journal of Chromatography. B, Biomedical Applications|February 18, 1994
Determination of MK-507, a novel topically effective carbonic anhydrase inhibitor, and its de-ethylated metabolite in human whole blood, plasma, and urine by high-performance liquid chromatographyB K Matuszewski, M L Constanzer, E J Woolf, et al.Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences|April 29, 2004
Determination of a cyclooxygenase II inhibitor in human plasma by capillary gas chromatography with mass spectrometric detectionJ D-Y Dru, C M Chavez-Eng, M L Constanzer, et al.Journal of Pharmaceutical Sciences|October 1, 1988
Stereoselective disposition of the geometric isomers of a novel lipoxygenase cyclo-oxygenase inhibitor in dog and photochemical interconversion of its isomersB K Matuszewski, S M Kanovsky, M L Constanzer, et al.Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences|June 19, 2004
Determination of a novel substance P inhibitor in human plasma by high-performance liquid chromatography with atmospheric pressure chemical ionization mass spectrometric detection using single and triple quadrupole detectorsM L Constanzer, C M Chavez-Eng, J Dru, et al.Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences|January 25, 2005
Determination of dextromethorphan and its metabolite dextrorphan in human urine using high performance liquid chromatography with atmospheric pressure chemical ionization tandem mass spectrometry: a study of selectivity of a tandem mass spectrometric assayM L Constanzer, C M Chavez-Eng, I Fu, et al.Biopharmaceutics & Drug Disposition|January 1, 1982
Evidence for route dependent biotransformation of cyclobenzaprine hydrochlorideA E Till, M L Constanzer, J Demetriades, et al.Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences|April 5, 2011
Quantitative liquid chromatographic and tandem mass spectrometric determination of vitamin D3 in human serum with derivatization: a comparison of in-tube LLE, 96-well plate LLE and in-tip SPMEW Xie, C M Chavez-Eng, W Fang, et al.Pageof 4