Samuel R. Gratz

Capillary Electrophoretic Application of 1-Alkyl-3-methylimidazolium-Based Ionic Liquids

Enrique G. Yanes, Samuel R. Gratz, Michael J. Baldwin et al. · Analytical Chemistry · 2001 · 315 citations

Phenolic Compounds, Solid-state Ionic, Chemical Engineering +12

Analysis of undeclared synthetic phosphodiesterase-5 inhibitors in dietary supplements and herbal matrices by LC–ESI–MS and LC–UV

Samuel R. Gratz, Cheryl L. Flurer, Karen A. Wolnik · Journal of Pharmaceutical and Biomedical Analysis · 2004 · 175 citations

Dietary Supplements, Pharmaceutical Science, Biochemistry +10

Enantiomeric Separations of Terbutaline by CE with a Sulfated β-Cyclodextrin Chiral Selector:  A Quantitative Binding Study

Samuel R. Gratz, Apryll M. Stalcup · Analytical Chemistry · 1998 · 98 citations

Accurate mass measurement using Fourier transform ion cyclotron resonance mass spectrometry for structure elucidation of designer drug analogs of tadalafil, vardenafil and sildenafil in herbal and pharmaceutical matrices

Samuel R. Gratz, Bryan M. Gamble, Rick A. Flurer · Rapid Communications in Mass Spectrometry · 2006 · 94 citations · Full text

Pharmaceutical Science, Erectile Dysfunction, Pharmacotherapy +23

Tetraethylammonium tetrafluoroborate: a novel electrolyte with a unique role in the capillary electrophoretic separation of polyphenols found in grape seed extracts

Enrique G. Yanes, Samuel R. Gratz, Apryll M. Stalcup · The Analyst · 2000 · 80 citations

Quaternary Ammonium Salt, Engineering, Botany +21