L. Ramos, R. Bakhtiar, and F. Tse; Application of Liquid Chromatography Atmospheric Pressure Chemical Ionization Tandem Mass Spectrometry in the Quantitative Analysis of Glyburide in Human Plasma. Rapid Commun. Mass Spectrom. 13, 2439-2443 (1999)
L. Ramos, R. Bakhtiar, T. Majundar, M. Hayes and F. Tse; Liquid chromatography /Atmospheric Pressure Chemical Ionization Tandem Mass Spectrometry Enantiomeric Separation of dl-threo-Methylphenidate, (Ritalin ®) Using a Macrocyclic Antibiotic as the Chiral Selector. Rapid Commun. Mass Spectrom. 13, 2054-2062 (1999)
L. Ramos, R. Bakhtiar and F. Tse; Liquid-liquid extraction using 96-well plate format in conjunction with liquid chromatography tandem mass spectrometry for quantitative determination of methylphenidate (Ritalin) in human plasma. Rapid Commun Mass Spectrom.14, 740-745 (2000)
L.Ramos, N. Brignol, R. Bakhtiar, L. Mc.Mahon and F.L. Tse; High-throughput approaches to the quantitative analysis of Ketoconazole, a potent hinhibitor of cytochrome p450 3A4, in human plasma. Rapid Commun. Mass Spectrom. 14, 2282-2293 (2000)
R. Bakhtiar, J. Lohne, L. Ramos, L. Khemani, M. Hayes, F. Tse; High-throughput quantification of the anti-leukemia drug STI571(GleevecTM) and its main metabolite (CGP74588) in human plasma using liquid chromatography-tandem mass spectrometry, Journal of Chromatography B, 768, 325-340 (2002)
L. Ramos, R. Bakhtiar and F. Tse; Quantification of methylphenidate in rat, rabbit and dog plasma using a chiral liquid-chromatography/tandem mass spectrometry method Application to toxicokinetic studies, Analytical Chemica Acta 469, 261-272 (2002)
Ray Bakhtiar, Luis Ramos and Francis L. S. Tse; Toxicokinetic assessment of methylphenidate (Ritalin®) in a 13-week oral toxicity study in dogs. Biomedical Chromatography, 18: 45-50 (2004)
Ronald E Esser, Rocca Miserendino-Molteni, Michele Sharr,Xiaoli Zhang, Wilma Porter, Luis Ramos, Jeffrey A Cramer, Shumin Zhuang, Anna Georgieva, Wieslawa Maniara; Pharmacodynamic behavior of the selective cyclooxygenase-2 inhibitor Lumiracoxib in the lipopolychaccharide-stimulated rat air pouch model. European Journal of Pharmaceutical Sciences, 25: 25-30 (2005)
Xiaohui Chen, Panos Hatsis, Joyce Judge, Upendra A Argikar, Xiaojun Ren, Jason Sarber, Keith Mansfield, Guiqing Liang, Adam Amaral, Alexandre Catoire, Adam Bentley, Luis Ramos, Paul Moench, Samuel Hintermann, David Carcache, Jim Glick, Jimmy Flarako Compound Property Optimization in Drug Discovery Using Quantitative Surface Sampling Micro Liquid Chromatography with Tandem Mass Spectrometry. Anal. Chem. 2016 Dec 16:88(23):11813-11820. Epub 2016 Nov 16.