Screening for corticosteroids in topical pharmaceuticals by HPLC with a scanning ultraviolet detectorREEPMEYER, John C.Journal of liquid chromatography & related technologies. 2001, Vol 24, Num 5, pp 693-709, issn 1082-6076Article

Modifications and insights into a method for the analysis of the nitrogen mustard mechlorethamine by high-performance liquid chromatographyREEPMEYER, John C; WEI YE; RITSCHEL, Wolfgang A et al.Analytica chimica acta. 2008, Vol 616, Num 1, pp 78-84, issn 0003-2670, 7 p.Article

Structure elucidation of thioketone analogues of sildenafil detected as adulterants in herbal aphrodisiacsREEPMEYER, John C; D'AVIGNON, D. Andre.Journal of pharmaceutical and biomedical analysis. 2009, Vol 49, Num 1, pp 145-150, issn 0731-7085, 6 p.Article

Use of a Hydrolytic Procedure and Spectrometric Methods in the Structure Elucidation of a Thiocarbonyl Analogue of Sildenafil Detected as an Adulterant in an Over-the-Counter Herbal Aphrodisiac : Trans Fats: Update on Health Effects, Methodology, and Levels in Processed FoodsREEPMEYER, John C; D'AVIGNON, D. André.Journal of AOAC International. 2009, Vol 92, Num 5, pp 1336-1342, issn 1060-3271, 7 p.Article

Use of liquid chromatography-mass spectrometry and a chemical cleavage reaction for the structure elucidation of a new sildenafil analogue detected as an adulterant in an herbal dietary supplementREEPMEYER, John C; WOODRUFF, Jeffrey T.Journal of pharmaceutical and biomedical analysis. 2007, Vol 44, Num 4, pp 887-893, issn 0731-7085, 7 p.Article

Separation and detection of the isomeric equine conjugated estrogens, equilin sulfate and Δ^8,9-dehydroestrone sulfate, by liquid chromatography-electrospray-mass spectrometry using carbon-coated zirconia and porous graphitic carbon stationary phasesREEPMEYER, John C; BROWER, James F; HONGPING YE et al.Journal of chromatography. 2005, Vol 1083, Num 1-2, pp 42-51, issn 0021-9673, 10 p.Article

Structure elucidation of a novel analogue of sildenafil detected as an adulterant in an herbal dietary supplementREEPMEYER, John C; WOODRUFF, Jeffrey T; D'AVIGNON, D. André et al.Journal of pharmaceutical and biomedical analysis. 2007, Vol 43, Num 5, pp 1615-1621, issn 0731-7085, 7 p.Article

Detection of undeclared erectile dysfunction drugs and analogues in dietary supplements by ion mobility spectrometryGRYNIEWICZ, Connie M; REEPMEYER, John C; KAUFFMAN, John F et al.Journal of pharmaceutical and biomedical analysis. 2009, Vol 49, Num 3, pp 601-606, issn 0731-7085, 6 p.Article

Screening of Heparin API by Near Infrared Reflectance and Raman SpectroscopySPENCER, John A; KAUFFMAN, John F; REEPMEYER, John C et al.Journal of pharmaceutical sciences. 2009, Vol 98, Num 10, pp 3540-3547, issn 0022-3549, 8 p.Article

Analysis of crude heparin by ¹ H NMR, capillary electrophoresis, and strong-anion-exchange-HPLC for contamination by over sulfated chondroitin sulfateKEIRE, David A; TREHY, Michael L; REEPMEYER, John C et al.Journal of pharmaceutical and biomedical analysis. 2010, Vol 51, Num 4, pp 921-926, issn 0731-7085, 6 p.Article