Tetraethylammonium tetrafluoroborate : a novel electrolyte with a unique role in the capillary electrophoretic separation of polyphenols found in grape seed extractsYANES, Enrique G; GRATZ, Samuel R; STALCUP, Apryll M et al.Analyst (London. 1877. Print). 2000, Vol 125, Num 11, pp 1919-1923, issn 0003-2654Article

Investigation of pyrrolizidine alkaloids and their N-oxides in commercial comfrey-containing products and botanical materials by liquid chromatography electrospray ionization mass spectrometryALTAMIRANO, Jorgelina C; GRATZ, Samuel R; WOLNIK, Karen A et al.Journal of AOAC International. 2005, Vol 88, Num 2, pp 406-412, issn 1060-3271, 7 p.Article

Simultaneous analysis of hepatotoxic pyrrolizidine alkaloids and N-oxides in comfrey root by LC-ion trap mass spectrometryWUILLOUD, Jorgelina C. A; GRATZ, Samuel R; GAMBLE, Brvan M et al.Analyst (London. 1877. Print). 2004, Vol 129, Num 2, pp 150-156, issn 0003-2654, 7 p.Article

Structural characterization of sulfoaildenafil, an analog of sildenafilGRATZ, Samuel R; ZELLER, Matthias; MINCEY, Daryl W et al.Journal of pharmaceutical and biomedical analysis. 2009, Vol 50, Num 2, pp 228-231, issn 0731-7085, 4 p.Article

Optimization of preparative electrophoretic chiral separation of ritalin enantiomersSCHNEIDERMAN, Eva; GRATZ, Samuel R; STALCUP, Apryll M et al.Journal of pharmaceutical and biomedical analysis. 2002, Vol 27, Num 3-4, pp 639-650, issn 0731-7085Article

Use of dyes to investigate migration of the chiral selector in CFFE and the impact on the chiral separationsGRATZ, Samuel R; SCHNEIDERMAN, Eva; MERTENS, Thomas R et al.Analytical chemistry (Washington, DC). 2001, Vol 73, Num 16, pp 3999-4005, issn 0003-2700Article

Continuous free flow electrophoresis for preparative chiral separations of piperoxan using sulfated β-cyclodextrinSTALCUP, Apryll M; SUTTON, Richard M. C; PAINULY, Prabha et al.Analyst (London. 1877. Print). 2000, Vol 125, Num 10, pp 1719-1724, issn 0003-2654Article

Capillary electrophoretic application of 1-alkyl-3-methylimidazolium-based ionic liquidsYANES, Enrique G; GRATZ, Samuel R; BALDWIN, Michael J et al.Analytical chemistry (Washington, DC). 2001, Vol 73, Num 16, pp 3838-3844, issn 0003-2700Article