Welch CJ - Search Results

1

Chromatographic resolution of closely related species in pharmaceutical chemistry: dehalogenation impurities and mixtures of halogen isomers.

Regalado EL, Zhuang P, Chen Y, Makarov AA, Schafer WA, McGachy N, Welch CJ. Regalado EL, et al. Among authors: welch cj. Anal Chem. 2014 Jan 7;86(1):805-13. doi: 10.1021/ac403376h. Epub 2013 Dec 20. Anal Chem. 2014. PMID: 24359254

2

Identification and characterization of isomeric intermediates in a catalyst formation reaction by means of speciation analysis using HPLC-ICPMS and HPLC-ESI-MS.

Tu Q, Wang T, Welch CJ, Wang P, Jia X, Raab C, Bu X, Bykowski D, Hohenstaufen B, Doyle MP. Tu Q, et al. Among authors: welch cj. Anal Chem. 2006 Feb 15;78(4):1282-9. doi: 10.1021/ac051679y. Anal Chem. 2006. PMID: 16478123

3

Multiparallel microfluidic high-performance liquid chromatography for high-throughput normal-phase chiral analysis.

Sajonz P, Schafer W, Gong X, Shultz S, Rosner T, Welch CJ. Sajonz P, et al. Among authors: welch cj. J Chromatogr A. 2007 Mar 23;1145(1-2):149-54. doi: 10.1016/j.chroma.2007.01.067. Epub 2007 Jan 26. J Chromatogr A. 2007. PMID: 17300788

4

Strategic use of preparative chiral chromatography for the synthesis of a preclinical pharmaceutical candidate.

Leonard WR Jr, Henderson DW, Miller RA, Spencer GA, Sudah OS, Biba M, Welch CJ. Leonard WR Jr, et al. Among authors: welch cj. Chirality. 2007 Sep;19(9):693-700. doi: 10.1002/chir.20378. Chirality. 2007. PMID: 17354260

5

Improving sensitivity in chiral supercritical fluid chromatography for analysis of active pharmaceutical ingredients.

Helmy R, Biba M, Zang J, Mao B, Fogelman K, Vlachos V, Hosek P, Welch CJ. Helmy R, et al. Among authors: welch cj. Chirality. 2007 Nov;19(10):787-92. doi: 10.1002/chir.20451. Chirality. 2007. PMID: 17722016

6

Microscale HPLC enables a new paradigm for commercialization of complex chiral stationary phases.

Welch CJ, Hyun MH, Kubota T, Schafer W, Bernardoni F, Choi HJ, Wu N, Gong X, Lipshutz B. Welch CJ, et al. Chirality. 2008 Jul;20(7):815-9. doi: 10.1002/chir.20548. Chirality. 2008. PMID: 18293368

7

Microscale chiral HPLC in support of pharmaceutical process research.

Welch CJ. Welch CJ. Chirality. 2009 Jan;21(1):114-8. doi: 10.1002/chir.20625. Chirality. 2009. PMID: 18655169 Review.

8

Serendipitous discovery of a pH-dependant atropisomer bond rotation: toward a write-protectable chiral molecular switch?

Welch CJ, Biba M, Pye P, Angelaud R, Egbertson M. Welch CJ, et al. J Chromatogr B Analyt Technol Biomed Life Sci. 2008 Nov 1;875(1):118-21. doi: 10.1016/j.jchromb.2008.08.028. J Chromatogr B Analyt Technol Biomed Life Sci. 2008. PMID: 18819851

9

Development of LC chiral methods for neutral pharmaceutical related compounds using reversed phase and normal phase liquid chromatography with different types of polysaccharide stationary phases.

Zhou L, Welch C, Lee C, Gong X, Antonucci V, Ge Z. Zhou L, et al. J Pharm Biomed Anal. 2009 May 1;49(4):964-9. doi: 10.1016/j.jpba.2009.02.021. Epub 2009 Feb 28. J Pharm Biomed Anal. 2009. PMID: 19299098

10

Systematic evaluation of new chiral stationary phases for supercritical fluid chromatography using a standard racemate library.

Pirzada Z, Personick M, Biba M, Gong X, Zhou L, Schafer W, Roussel C, Welch CJ. Pirzada Z, et al. Among authors: welch cj. J Chromatogr A. 2010 Feb 12;1217(7):1134-8. doi: 10.1016/j.chroma.2009.10.004. Epub 2009 Oct 8. J Chromatogr A. 2010. PMID: 19850298

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