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Mohammed Jemal

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Yuan-Qing Xia; Jim Lau; Timothy Olah; Mohammed Jemal
Targeted quantitative bioanalysis in plasma using liquid chromatography/high-resolution accurate mass spectrometry: an evaluation of global selectivity as a function of mass resolving power and extraction window, with comparison of centroid and profile modes.
Eliza N Fung; Timothy Olah; Yuan-Qing Xia; Jianing Zeng; Anne-Francoise Aubry; Mohammed Jemal
Full-scan high resolution accurate mass spectrometry (HRMS) in regulated bioanalysis: LC-HRMS for the quantitation of prednisone and prednisolone in human plasma.
Hao Jiang; Zheng Ouyang; Theodora W Salcedo; Yuan-Qin Xia; Jianing Zeng; Yuzhong Deng; Mohammed Jemal; Mark E Arnold
A rugged and accurate liquid chromatography-tandem mass spectrometry method for quantitative determination of BMS-790052 in plasma.

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All Publications

2011: Yuan-Qing Xia; Jim Lau; Timothy Olah; Mohammed Jemal
Targeted quantitative bioanalysis in plasma using liquid chromatography/high-resolution accurate mass spectrometry: an evaluation of global selectivity as a function of mass resolving power and extraction window, with comparison of centroid and profile modes.
Rapid communications in mass spectrometry : RCM 2011;25(19):2863-78.
2011: Eliza N Fung; Timothy Olah; Yuan-Qing Xia; Jianing Zeng; Anne-Francoise Aubry; Mohammed Jemal
Full-scan high resolution accurate mass spectrometry (HRMS) in regulated bioanalysis: LC-HRMS for the quantitation of prednisone and prednisolone in human plasma.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2011;879(27):2919-27.
2011: Hao Jiang; Zheng Ouyang; Theodora W Salcedo; Yuan-Qin Xia; Jianing Zeng; Yuzhong Deng; Mohammed Jemal; Mark E Arnold
A rugged and accurate liquid chromatography-tandem mass spectrometry method for quantitative determination of BMS-790052 in plasma.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2011;879(22):2064-72.
2011: Steven T Wu; Zheng Ouyang; Timothy V Olah; Mohammed Jemal
A strategy for liquid chromatography/tandem mass spectrometry based quantitation of pegylated protein drugs in plasma using plasma protein precipitation with water-miscible organic solvents and subsequent trypsin digestion to generate surrogate peptides for detection.
Rapid communications in mass spectrometry : RCM 2011;25(2):281-90.
2010: Lorell Discenza; Celia D'Arienzo; Timothy Olah; Mohammed Jemal
LC-MS/MS method using unbonded silica column and aqueous/methanol mobile phase for the simultaneous quantification of a drug candidate and co-administered metformin in rat plasma.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2010;878(19):1583-9.
2010: Mohammed Jemal; Zheng Ouyang; Yuan-Qing Xia
Systematic LC-MS/MS bioanalytical method development that incorporates plasma phospholipids risk avoidance, usage of incurred sample and well thought-out chromatography.
Biomedical chromatography : BMC 2010;24(1):2-19.
2009: Steven T Wu; Kai Cao; Samuel J Bonacorsi; Hongwei Zhang; Mohammed Jemal
Distinguishing a phosphate ester prodrug from its isobaric sulfate metabolite by mass spectrometry without the metabolite standard.
Rapid communications in mass spectrometry : RCM 2009;23(19):3107-13.
2009: Yuan-Qing Xia; Mohammed Jemal
High-field asymmetric waveform ion mobility spectrometry for determining the location of in-source collision-induced dissociation in electrospray ionization mass spectrometry.
Analytical chemistry 2009;81(18):7839-43.
2009: Yuan-Qing Xia; Mohammed Jemal
Phospholipids in liquid chromatography/mass spectrometry bioanalysis: comparison of three tandem mass spectrometric techniques for monitoring plasma phospholipids, the effect of mobile phase composition on phospholipids elution and the association of phospholipids with matrix effects.
Rapid communications in mass spectrometry : RCM 2009;23(14):2125-38.
2008: Yuan-Qing Xia; Steven T Wu; Mohammed Jemal
LC-FAIMS-MS/MS for quantification of a peptide in plasma and evaluation of FAIMS global selectivity from plasma components.
Analytical chemistry 2008;80(18):7137-43.
2008: Steven T Wu; Dale Schoener; Mohammed Jemal
Plasma phospholipids implicated in the matrix effect observed in liquid chromatography/tandem mass spectrometry bioanalysis: evaluation of the use of colloidal silica in combination with divalent or trivalent cations for the selective removal of phospholipids from plasma.
Rapid communications in mass spectrometry : RCM 2008;22(18):2873-81.
2007: Yan Mao; Mike-Qingtao Huang; Yuan-Qing Xia; Mohammed Jemal
High-throughput quantitation of nefazodone and its metabolites in human plasma by high flow direct-injection LC-MS/MS.
Journal of pharmaceutical and biomedical analysis 2007;43(5):1808-19.
2007: Huijin Dong; Zheng Ouyang; Jane Liu; Mohammed Jemal
The use of a dual dye photometric calibration method to identify possible sample dilution from an automated multichannel liquid-handling system.
Clinics in laboratory medicine 2007;27(1):113-22.
2007: Steven T Wu; Yuan-Qing Xia; Mohammed Jemal
High-field asymmetric waveform ion mobility spectrometry coupled with liquid chromatography/electrospray ionization tandem mass spectrometry (LC/ESI-FAIMS-MS/MS) multi-component bioanalytical method development, performance evaluation and demonstration of the constancy of the compensation voltage with change of mobile phase composition or flow rate.
Rapid communications in mass spectrometry : RCM 2007;21(22):3667-76.
2006: Mohammed Jemal; Yuan-Qing Xia
LC-MS Development strategies for quantitative bioanalysis.
Current drug metabolism 2006;7(5):491-502.
2006: Yuan-Qing Xia; Mohammed Jemal; Naiyu Zheng; Xiaohang Shen
Utility of porous graphitic carbon stationary phase in quantitative liquid chromatography/tandem mass spectrometry bioanalysis: quantitation of diastereomers in plasma.
Rapid communications in mass spectrometry : RCM 2006;20(12):1831-7.
2006: Mike-Qingtao Huang; Yan Mao; Mohammed Jemal; Mark Arnold
Increased productivity in quantitative bioanalysis using a monolithic column coupled with high-flow direct-injection liquid chromatography/tandem mass spectrometry.
Rapid communications in mass spectrometry : RCM 2006;20(11):1709-14.
2004: Hemant N Joshi; Ravindra W Tejwani; Martha Davidovich; Vaishali P Sahasrabudhe; Mohammed Jemal; Mohinder S Bathala; Sailesh A Varia; Abu T M Serajuddin
Bioavailability enhancement of a poorly water-soluble drug by solid dispersion in polyethylene glycol-polysorbate 80 mixture.
International journal of pharmaceutics 2004;269(1):251-8.
2003: Mohammed Jemal; Satish Rao; Michael Gatz; Daisy B Whigan
Liquid chromatography-tandem mass spectrometric quantitative determination of the HIV protease inhibitor atazanavir (BMS-232632) in human peripheral blood mononuclear cells (PBMC): practical approaches to PBMC preparation and PBMC assay design for high-throughput analysis.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2003;795(2):273-89.
2003: Wei-chi Liao; Ole Vesterqvist; Carol Delaney; Mohammed Jemal; Irene Ferreira; Neville Ford; Brian Swanson; Howard Uderman
Pharmacokinetics and pharmacodynamics of the vasopeptidase inhibitor, omapatrilat in healthy subjects.
British journal of clinical pharmacology 2003;56(4):395-406.
2003: Alan Schuster; S Burzawa; Mohammed Jemal; E Loizillon; P Couerbe; Daisy B Whigan
Quantitative determination of the HIV protease inhibitor atazanavir (BMS-232632) in human plasma by liquid chromatography-tandem mass spectrometry following automated solid-phase extraction.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2003;788(2):377-86.
2003: Mohammed Jemal; Zheng Ouyang; Weiping Zhao; Mingshe Zhu; Wells W Wu
A strategy for metabolite identification using triple-quadrupole mass spectrometry with enhanced resolution and accurate mass capability.
Rapid communications in mass spectrometry : RCM 2003;17(24):2732-40.
2003: Mohammed Jemal; Alan Schuster; Daisy B Whigan
Liquid chromatography/tandem mass spectrometry methods for quantitation of mevalonic acid in human plasma and urine: method validation, demonstration of using a surrogate analyte, and demonstration of unacceptable matrix effect in spite of use of a stable isotope analog internal standard.
Rapid communications in mass spectrometry : RCM 2003;17(15):1723-34.
2003: Mohammed Jemal; Zheng Ouyang
Enhanced resolution triple-quadrupole mass spectrometry for fast quantitative bioanalysis using liquid chromatography/tandem mass spectrometry: investigations of parameters that affect ruggedness.
Rapid communications in mass spectrometry : RCM 2003;17(1):24-38.
2002: Mohammed Jemal; Zheng Ouyang; Mark L Powell
A strategy for a post-method-validation use of incurred biological samples for establishing the acceptability of a liquid chromatography/tandem mass-spectrometric method for quantitation of drugs in biological samples.
Rapid communications in mass spectrometry : RCM 2002;16(16):1538-47.
2001: John B Kostis; Marc Klapholz; Carol Delaney; Ole Vesterqvist; M Cohen; J A Manning; Mohammed Jemal; GD Kollia; Wei-chi Liao
Pharmacodynamics and pharmacokinetics of omapatrilat in heart failure.
Journal of clinical pharmacology 2001;41(12):1280-90.
2001: Mohammed Jemal; S Khan; DS Teitz; J A McCafferty; DJ Hawthorne
LC/MS/MS determination of omapatrilat, a sulfhydryl-containing vasopeptidase inhibitor, and its sulfhydryl- and thioether-containing metabolites in human plasma.
Analytical chemistry 2001;73(22):5450-6.
2001: P O'Grady; Ole Vesterqvist; B Malhotra; J Manning; Mohammed Jemal; G Ge; B Mangold
Omapatrilat in patients with hepatic cirrhosis. Pharmacodynamics and pharmacokinetics.
European journal of clinical pharmacology 2001;57(3):249-57.
2001: Mohammed Jemal; M Huang; Yan Mao; Daisy B Whigan; Mark L Powell
Increased throughput in quantitative bioanalysis using parallel-column liquid chromatography with mass spectrometric detection.
Rapid communications in mass spectrometry : RCM 2001;15(12):994-9.
2000: Mohammed Jemal
High-throughput quantitative bioanalysis by LC/MS/MS.
Biomedical chromatography : BMC 2000;14(6):422-9.
2000: DS Teitz; S Khan; Mark L Powell; Mohammed Jemal
An automated method of sample preparation of biofluids using pierceable caps to eliminate the uncapping of the sample tubes during sample transfer.
Journal of biochemical and biophysical methods 2000;45(2):193-204.
2000: Domenic A Sica; W Liao; Todd W B Gehr; S Khan; Mohammed Jemal; CL Delaney; I M Ferreira; B K Malhotra
Disposition and safety of omapatrilat in subjects with renal impairment.
Clinical pharmacology and therapeutics 2000;68(3):261-9.
2000: Mohammed Jemal; Zheng Ouyang; Mark L Powell
Direct-injection LC-MS-MS method for high-throughput simultaneous quantitation of simvastatin and simvastatin acid in human plasma.
Journal of pharmaceutical and biomedical analysis 2000;23(2-3):323-40.
2000: Mohammed Jemal; Yuan-Qing Xia
Bioanalytical method validation design for the simultaneous quantitation of analytes that may undergo interconversion during analysis.
Journal of pharmaceutical and biomedical analysis 2000;22(5):813-27.
2000: Mohammed Jemal; D E Mulvana
Liquid chromatographic-electrospray tandem mass spectrometric method for the simultaneous quantitation of the prodrug fosinopril and the active drug fosinoprilat in human serum.
Journal of chromatography. B, Biomedical sciences and applications 2000;739(2):255-71.
2000: Mohammed Jemal; Zheng Ouyang
The need for chromatographic and mass resolution in liquid chromatography/tandem mass spectrometric methods used for quantitation of lactones and corresponding hydroxy acids in biological samples.
Rapid communications in mass spectrometry : RCM 2000;14(19):1757-65.
2000: Mohammed Jemal; M Huang; Yan Mao; Daisy B Whigan; Alan Schuster
Liquid chromatography/electrospray tandem mass spectrometry method for the quantitation of fosinoprilat in human serum using automated 96-well solid-phase extraction for sample preparation.
Rapid communications in mass spectrometry : RCM 2000;14(12):1023-8.
2000: Yuan-Qing Xia; Daisy B Whigan; Mark L Powell; Mohammed Jemal
Ternary-column system for high-throughput direct-injection bioanalysis by liquid chromatography/tandem mass spectrometry.
Rapid communications in mass spectrometry : RCM 2000;14(2):105-11.
1999: Mohammed Jemal; S Rao; I Salahudeen; B C Chen; R Kates
Quantitation of cerivastatin and its seven acid and lactone biotransformation products in human serum by liquid chromatography-electrospray tandem mass spectrometry.
Journal of chromatography. B, Biomedical sciences and applications 1999;736(1-2):19-41.
1999: Mohammed Jemal; DS Teitz; Zheng Ouyang; S Khan
Comparison of plasma sample purification by manual liquid-liquid extraction, automated 96-well liquid-liquid extraction and automated 96-well solid-phase extraction for analysis by high-performance liquid chromatography with tandem mass spectrometry.
Journal of chromatography. B, Biomedical sciences and applications 1999;732(2):501-8.
1999: Philip Yu-An Ding; K M Chu; OY Hu; G M Huang; J J Jeng; A Chang; CL Delaney; M MacAskill; B C Yang; Mohammed Jemal; R Smith; Wei-chi Liao
Fosinopril: pharmacokinetics and pharmacodynamics in Chinese subjects.
Journal of clinical pharmacology 1999;39(2):155-60.
1999: Mohammed Jemal; M Huang; X Jiang; Yan Mao; Mark L Powell
Direct injection versus liquid-liquid extraction for plasma sample analysis by high performance liquid chromatography with tandem mass spectrometry.
Rapid communications in mass spectrometry : RCM 1999;13(21):2125-32.
1999: Yuan-Qing Xia; Daisy B Whigan; Mohammed Jemal
A simple liquid-liquid extraction with hexane for low-picogram determination of drugs and their metabolites in plasma by high-performance liquid chromatography with positive ion electrospray tandem mass spectrometry.
Rapid communications in mass spectrometry : RCM 1999;13(15):1611-21.
1999: Mohammed Jemal; Zheng Ouyang; Yuan-Qing Xia; Mark L Powell
A versatile system of high-flow high performance liquid chromatography with tandem mass spectrometry for rapid direct-injection analysis of plasma samples for quantitation of a beta-lactam drug candidate and its open-ring biotransformation product.
Rapid communications in mass spectrometry : RCM 1999;13(14):1462-71.
1999: Mohammed Jemal; Zheng Ouyang; B C Chen; DS Teitz
Quantitation of the acid and lactone forms of atorvastatin and its biotransformation products in human serum by high-performance liquid chromatography with electrospray tandem mass spectrometry.
Rapid communications in mass spectrometry : RCM 1999;13(11):1003-15.
1998: Mohammed Jemal; Zheng Ouyang
Gas chromatography-mass spectrometric method for quantitative determination in human urine of dicarboxylic (dioic) acids produced in the body as a consequence of cholesterol biosynthesis inhibition.
Journal of chromatography. B, Biomedical sciences and applications 1998;709(2):233-41.
1998: Mohammed Jemal; Yuan-Qing Xia; Daisy B Whigan
The use of high-flow high performance liquid chromatography coupled with positive and negative ion electrospray tandem mass spectrometry for quantitative bioanalysis via direct injection of the plasma/serum samples.
Rapid communications in mass spectrometry : RCM 1998;12(19):1389-99.
1998: Mohammed Jemal; Zheng Ouyang; DS Teitz
High performance liquid chromatography mobile phase composition optimization for the quantitative determination of a carboxylic acid compound in human plasma by negative ion electrospray high performance liquid chromatography tandem mass spectrometry.
Rapid communications in mass spectrometry : RCM 1998;12(8):429-34.
1997: Mohammed Jemal; R Almond; Zheng Ouyang; DS Teitz
Negative ion electrospray high-performance liquid chromatography-mass spectrometry method development for determination of a highly polar phosphonic acid/sulfonic acid compound in plasma. Optimization of ammonium acetate concentration and in-source collision-induced dissociation.
Journal of chromatography. B, Biomedical sciences and applications 1997;703(1-2):167-75.
1997: Mohammed Jemal; DJ Hawthorne
Quantitative determination of BMS-186716, a thiol compound, in rat plasma by high-performance liquid chromatography-positive ion electrospray mass spectrometry after hydrolysis of the methyl acrylate adduct by the native esterases.
Journal of chromatography. B, Biomedical sciences and applications 1997;698(1-2):123-32.
1997: Mohammed Jemal; DJ Hawthorne
Quantitative determination of BMS186716, a thiol compound, in dog plasma by high-performance liquid chromatography-positive ion electrospray mass spectrometry after formation of the methyl acrylate adduct.
Journal of chromatography. B, Biomedical sciences and applications 1997;693(1):109-16.
1997: Mohammed Jemal; R B Almond; DS Teitz
Quantitative bioanalysis utilizing high-performance liquid chromatography/electrospray mass spectrometry via selected-ion monitoring of the sodium ion adduct [M+Na]+.
Rapid communications in mass spectrometry : RCM 1997;11(10):1083-8.
1995: Mohammed Jemal; A Patel; DS Teitz
Direct injection for high sample throughput capillary gas chromatographic-mass spectrometric bioanalysis.
Journal of chromatography. B, Biomedical applications 1995;666(2):251-7.
1992: D Wang-Iverson; M E Arnold; Mohammed Jemal; Allen cohen
Determination of SQ 33,600, a phosphinic acid containing HMG CoA reductase inhibitor, in human serum by high-performance liquid chromatography combined with ionspray mass spectrometry.
Biological mass spectrometry 1992;21(4):189-94.
1989: D Wang-Iverson; E Ivashkiv; Mohammed Jemal; Allen cohen
Determination of lovastatin acid in serum by gas chromatography/mass spectrometry.
Rapid communications in mass spectrometry : RCM 1989;3(5):132-4.
1988: Mohammed Jemal; E Ivashkiv; DS Teitz; Allen cohen
Simultaneous determination of the prodrug zofenopril and its active drug in plasma by capillary gas chromatography-mass-selective detection.
Journal of chromatography 1988;428(1):81-92.
1987: Mohammed Jemal; E Ivashkiv; D Both; R Koski; Allen cohen
Picogram level determination of fluphenazine in human plasma by automated gas chromatography/mass selective detection.
Biomedical & environmental mass spectrometry 1987;14(12):699-704.
1987: D Wang-Iverson; Mohammed Jemal; Allen cohen
Determination of enantiomeric purity of 3-mercapto-2-methylpropionic acid.
Journal of chromatography 1987;408():365-71.
1987: Mohammed Jemal; Allen cohen
Simultaneous determination of the acid chloride S-benzoyl-3-mercapto-2-methylpropanoyl chloride and residual carboxylic acid by capillary gas chromatography.
Journal of chromatography 1987;408():360-4.
1987: Mohammed Jemal; S Black; Allen cohen
Mass spectral evidence for the electrophilicity of N-ethylmaleimide and thiobenzoyl groups.
Rapid communications in mass spectrometry : RCM 1987;1(7-8):129-31.
1987: Mohammed Jemal; Allen cohen
Determination of enantiomeric purity of Z-oxylysine by capillary gas chromatography.
Journal of chromatography 1987;394(2):388-94.
1987: Mohammed Jemal; Allen cohen
Enantiomeric purity determination of L-proline benzyl ester by chiral column gas chromatography.
Journal of chromatography 1987;392():442-6.
1986: M Ribick; E Ivashkiv; Mohammed Jemal; Allen cohen
Use of an inexpensive mass-selective detector for the high-sensitivity gas chromatographic determination of nadolol in plasma.
Journal of chromatography 1986;381(2):419-23.
1986: Mohammed Jemal; E Ivashkiv; P Valatin; Allen cohen
Determination of a thromboxane A2 receptor antagonist in human plasma by capillary gas chromatography with electron-capture detection.
Journal of chromatography 1986;381(2):424-30.
1985: Mohammed Jemal; E Ivashkiv; M Ribick; Allen cohen
Determination of SQ 27,519, the active phosphinic acid-carboxylic acid of the prodrug SQ 28,555, in human serum by capillary gas chromatography with nitrogen-phosphorus detection after a two-step derivatization.
Journal of chromatography 1985;345(2):299-307.
1985: Mohammed Jemal; E Ivashkiv; Allen cohen
Simultaneous determination of captopril and S-benzoyl captopril in human blood by capillary gas chromatography-mass selective detection.
Biomedical mass spectrometry 1985;12(11):664-7.
1985: Mohammed Jemal; Allen cohen
Determination of S-benzoyl captopril in human urine by capillary gas chromatography with electron-capture detection.
Journal of chromatography 1985;342(1):186-92.