| # | Title | Journal | Year | Citations |
|---|
| 1 | The US regulatory and pharmacopeia response to the global heparin contamination crisis | Nature Biotechnology | 2016 | 93 |
| 2 | Use of liquid chromatography–mass spectrometry and a hydrolytic technique for the detection and structure elucidation of a novel synthetic vardenafil designer drug added illegally to a “natural” herbal dietary supplement | Journal of Chromatography A | 2006 | 89 |
| 3 | Selective melamine detection in multiple sample matrices with a portable Raman instrument using surface enhanced Raman spectroscopy-active gold nanoparticles | Analytica Chimica Acta | 2012 | 85 |
| 4 | Structure elucidation of a novel analogue of sildenafil detected as an adulterant in an herbal dietary supplement | Journal of Pharmaceutical and Biomedical Analysis | 2007 | 81 |
| 5 | Topical drug classification | International Journal of Pharmaceutics | 2005 | 72 |
| 6 | Post-translational structural modifications of immunoglobulin G and their effect on biological activity | Analytical and Bioanalytical Chemistry | 2015 | 72 |
| 7 | Standardization of Raman spectra for transfer of spectral libraries across different instruments | Analyst, The | 2011 | 69 |
| 8 | Precision and robustness of 2D-NMR for structure assessment of filgrastim biosimilars | Nature Biotechnology | 2016 | 62 |
| 9 | Detection of undeclared erectile dysfunction drugs and analogues in dietary supplements by ion mobility spectrometry | Journal of Pharmaceutical and Biomedical Analysis | 2009 | 61 |
| 10 | Structure elucidation of thioketone analogues of sildenafil detected as adulterants in herbal aphrodisiacs | Journal of Pharmaceutical and Biomedical Analysis | 2009 | 58 |
| 11 | Rapid Limit Tests for Metal Impurities in Pharmaceutical Materials by X-ray Fluorescence Spectroscopy Using Wavelet Transform Filtering | Analytical Chemistry | 2011 | 54 |
| 12 | Simple NMR methods for evaluating higher order structures of monoclonal antibody therapeutics with quinary structure | Journal of Pharmaceutical and Biomedical Analysis | 2016 | 46 |
| 13 | Separation and detection of the isomeric equine conjugated estrogens, equilin sulfate and Δ8,9-dehydroestrone sulfate, by liquid chromatography–electrospray-mass spectrometry using carbon-coated zirconia and porous graphitic carbon stationary phases | Journal of Chromatography A | 2005 | 34 |
| 14 | Libraries, classifiers, and quantifiers: A comparison of chemometric methods for the analysis of Raman spectra of contaminated pharmaceutical materials | Journal of Pharmaceutical and Biomedical Analysis | 2012 | 33 |
| 15 | Multivariate Calibration and Instrument Standardization for the Rapid Detection of Diethylene Glycol in Glycerin by Raman Spectroscopy | Applied Spectroscopy | 2011 | 28 |
| 16 | Evaluation of metered dose inhaler spray velocities using Phase Doppler Anemometry (PDA) | International Journal of Pharmaceutics | 2012 | 28 |
| 17 | Screening of unapproved drugs using portable Raman spectroscopy | Analytica Chimica Acta | 2017 | 27 |
| 18 | Interlaboratory study of a liquid chromatography method for erythromycin: determination of uncertainty | Journal of Chromatography A | 2003 | 24 |
| 19 | Direct intramolecular gas‐phase transfer reactions during fragmentation of sildenafil and thiosildenafil analogs in electrospray ionization mass spectrometry | Rapid Communications in Mass Spectrometry | 2009 | 22 |
| 20 | Modern analytics for synthetically derived complex drug substances: NMR, AFFF–MALS, and MS tests for glatiramer acetate | Analytical and Bioanalytical Chemistry | 2015 | 22 |
| 21 | Determination of the enantiomeric purity of epinephrine by HPLC with circular dichroism detection | Journal of Liquid Chromatography and Related Technologies | 2017 | 22 |
| 22 | Development and validation of a liquid-chromatography tandem mass spectrometry method to determine in vitro and in vivo histamine release | Journal of Pharmaceutical and Biomedical Analysis | 2015 | 21 |
| 23 | Repetitive Application of Sunscreen Containing Titanium Dioxide Nanoparticles on Human Skin | JAMA Dermatology | 2016 | 20 |
| 24 | Chemometric Methods to Quantify 1D and 2D NMR Spectral Differences Among Similar Protein Therapeutics | AAPS PharmSciTech | 2018 | 20 |
| 25 | “Evaluation of ion mobility spectrometry for the detection of mitragynine in kratom products” | Journal of Pharmaceutical and Biomedical Analysis | 2017 | 17 |
| 26 | Multivariate Calibration of Covalent Aggregate Fraction to the Raman Spectrum of Regular Human Insulin | Journal of Pharmaceutical Sciences | 2008 | 14 |
| 27 | Comparison of urinary and serum levels of di-22:6-bis(monoacylglycerol)phosphate as noninvasive biomarkers of phospholipidosis in rats | Toxicology Letters | 2012 | 14 |
| 28 | Detection of protein modifications and counterfeit protein pharmaceuticals using isotope tags for relative and absolute quantification and matrix-assisted laser desorption/ionization tandem time-of-flight mass spectrometry: Studies of insulins | Analytical Biochemistry | 2008 | 13 |
| 29 | Detection of diethylene glycol adulteration in propylene glycol—Method validation through a multi-instrument collaborative study | Journal of Pharmaceutical and Biomedical Analysis | 2011 | 13 |
| 30 | Evaluation of an Abbreviated Impactor for Fine Particle Fraction (FPF) Determination of Metered Dose Inhalers (MDI) | AAPS PharmSciTech | 2013 | 13 |
| 31 | Performance metrics for evaluating system suitability in liquid chromatography—Mass spectrometry peptide mass mapping of protein therapeutics and monoclonal antibodies | MAbs | 2015 | 13 |
| 32 | Quantitative determinations using portable Raman spectroscopy | Journal of Pharmaceutical and Biomedical Analysis | 2017 | 12 |
| 33 | Analyses of marketplace tacrolimus drug product quality: Bioactivity, NMR and LC–MS | Journal of Pharmaceutical and Biomedical Analysis | 2013 | 11 |
| 34 | Expanding the analytical toolbox for identity testing of pharmaceutical ingredients: Spectroscopic screening of dextrose using portable Raman and near infrared spectrometers | Analytica Chimica Acta | 2016 | 11 |
| 35 | Fluorescent chemical sensors: applications in analytical, environmental, forensic, pharmaceutical, biological, and biomedical sample measurement, and clinical diagnosis | Applied Spectroscopy Reviews | 2024 | 11 |
| 36 | Application of Ultra-Centrifugation and Bench-Top 19F NMR for Measuring Drug Phase Partitioning for the Ophthalmic Oil-in-Water Emulsion Products | AAPS PharmSciTech | 2018 | 10 |
| 37 | Quantitative Raman assays for on-site analysis of stockpiled drugs | Analytica Chimica Acta | 2018 | 10 |
| 38 | Deep-Ultraviolet (UV) Resonance Raman Spectroscopy as a Tool for Quality Control of Formulated Therapeutic Proteins | Applied Spectroscopy | 2012 | 9 |
| 39 | Direct Site-Specific Glycoform Identification and Quantitative Comparison of Glycoprotein Therapeutics: Imiglucerase and Velaglucerase Alfa | AAPS Journal | 2015 | 9 |
| 40 | Near Infrared Spectroscopy of Magnesium Stearate Hydrates and Multivariate Calibration of Pseudopolymorph Composition | Journal of Pharmaceutical Sciences | 2008 | 8 |
| 41 | Propagation of Uncertainty in Nasal Spray In Vitro Performance Models Using Monte Carlo Simulation: Part II. Error Propagation During Product Performance Modeling | Journal of Pharmaceutical Sciences | 2010 | 8 |
| 42 | Modifications and insights into a method for the analysis of the nitrogen mustard mechlorethamine by high-performance liquid chromatography | Analytica Chimica Acta | 2008 | 7 |
| 43 | Rapid screening of guar gum using portable Raman spectral identification methods | Journal of Pharmaceutical and Biomedical Analysis | 2016 | 7 |
| 44 | Dissolution Test of Tacrolimus Capsule: Effects of Filtration and Glass Adsorption | AAPS PharmSciTech | 2018 | 2 |
| 45 | Comparative Studies of Therapeutic Protein Secondary Structure Using Deep UV Resonance Raman Spectroscopy | | 2010 | 1 |
| 46 | Analytical Tools for Physicochemical Characterization and Fingerprinting | AAPS Advances in the Pharmaceutical Sciences Series | 2019 | 1 |
| 47 | Editorial: Heparin and Related Polysaccharides | Frontiers in Medicine | 2020 | 1 |
