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file icon Separation & Identification of cis-Monotetrahydrofuran Acetogenins by Chiral Chromatography LC-EI-MS
24.10.2008
Identification of structural and stereoisomers of acetogenins by chiral chromatography with normal phase (isopropanol:hexane) elution and Particle Beam EI-MS.  Annonaceous acetogenins belong to a class of compounds that have been isolated from plants in the Annonaceae family. These acetogenins exhibit a variety of significant bioactivities including pesticidal, antiparasitic, and cytotoxic anti-tumor. Acetogenins are C 35 -C 39 compounds that typically contain two long hydrocarbon chains, one of which connects a terminal 2,4-disubstituted-γ-lactone to a variable number of tetrahydrofuran (THF) rings. The hydrocarbon chains possess a number of oxygenated functional groups at various positions. These groups can be hydroxyls, acetoxyls and/or ketones. The acetogenins also contain multiple stereocenters and this coupled with the existence of both structural and stereoisomers in the same plant source can make them very difficult to isolate.
Hits: 78
file icon Am Bio Laboratory Article July 07hot!
06.05.2008
An article printed in the American Biotechnology Laboratory June/July 2007  journal entitled:    Identification of Medicinally Active Compounds in Prairie Plants by HPLC Coupled to Electron Impact-Mass Spectrometry. 
Hits: 405
file icon PITTCON 2007 Posterhot!
15.08.2007
Complete PITTCON 2007 Poster as presented, entitled: Breakthrough in Quantitation and Linearity in Particle Beam LC/MS through Improvements in Aerosol Generation and Particle Transport.
Hits: 744
file icon Pittcon Oral Presentationhot!
31.01.2006

Reprinted presentation of PITTCON 2001 Oral Presentation (Monday 87O) What to do with the “Leftovers”’ An Effective Method for the Determination of Intermediates and Products in an Open Access Environment that don’t work by ESI LC/MS.

Hits: 1014
file icon ASMS 2007 Posterhot!
15.08.2007
Complete ASMS 2007 Poster as presented, entitled:   The determination and quantitation of ten pesticides in drinking water by use of Solid Phase Extraction and ESI-LCMS
Hits: 1019
file icon Pittcon 2006 Posterhot!
24.03.2006
Reprinted presentation of PITTCON 2006 Poster:   Analysis of Antioxidant Polyphenolics in Medicinal Plants by GC/MS and LC/EI/MS.

Hits: 1232
file icon ASMS 2005 Posterhot!
31.01.2006
Reprint of Corporate Poster for ASMS 2005 entitled:  The Self Oscillating Nebulizer cssOCN© for all brands of LCMS and ICP.

Hits: 1252
file icon Pittcon 2006 Posterhot!
21.03.2006
Reprinted presentation of PITTCON 2006 Poster:   Application of LC/ESI/MS and LC/EI/MS to the Characterization of Tannins and Flavonoids from the Acorns of Quercus macrocapra.


Hits: 1263
file icon ASMS 2000 Posterhot!
31.01.2006
Complete ASMS 2000 Poster (TP236) entitled:   A comparison of the structural information contained in the LC/MS EI and CI spectra of selected chemicals and natural products.

Hits: 1275
file icon KC Life Science Day Posterhot!
29.03.2006
Reprint of Poster:  Identification of Antineoplastic and Neurotrophic Lignans in Medicinal Prairie Plants by Liquid Chromatography Electron Impact Mass Spectrometry (LC/EI/MS).

Hits: 1280
file icon Application Notehot!
31.01.2006

Application of particle beam interface to Agilent 5973 benchtop mass spectrometer showing analysis of PNAs and an extraction of St. John's Wort.

Hits: 1341
file icon Pittcon 2005 Posterhot!
31.01.2006
Reprinted presentation of PITTCON 2005 Poster: The Analysis of Red Bell Pepper Constituents by Particle Beam Liquid Chromatography Mass Spectrometry.

Hits: 1357
file icon ASMS 2005 Posterhot!
31.01.2006
Reprint of Poster ThP316 for ASMS 2005 entitled:   Chemical Constituents of Acorus calamus from a Kansas Prairie.

Hits: 1361
file icon ASMS 2000 Posterhot!
31.01.2006
Complete ASMS 2000 Poster (ThP211) entitled:  Application of a Particle Beam LC/MS Interface to the commercially available Agilent 5973 Mass Spectrometer.

Hits: 1376
file icon Pittcon 2001 Posterhot!
31.01.2006
Reprinted presentation of PITTCON 2001 Poster (Tuesday 1945P):  A Comparison of Information Contained in the Spectra of LC/MS Electron Impact (EI), Chemical Ionization (CI), and Electrospray Ionization (ES) for selected chemicals and natural products.

Hits: 1377
file icon Brochurehot!
16.05.2006

Shawnee Kansas Bio-Initiative Brochure created by the Shawnee Economic Development Council to promote the City's businesses that feature life sciences as their core.

Hits: 1467
file icon Application Notehot!
31.01.2006

Application of a CSS Analytical "Upgrade Solution" to the Agilent LC/MSD Rev A. hardware, giving it capabilities similar to the Rev B. hardware.

Hits: 1485
file icon ASMS 2006 Posterhot!
27.06.2006
Complete ASMS 2006 Poster as presented, entitled: Characterization of Di- and Tri-substituted Sulfonated Azo and Acid Dyes by LC/ESI/MS/MS, LC/EI/MS and LC/CI/MS.
Hits: 1508
file icon Pittcon 2001 Posterhot!
31.01.2006
Reprinted presentation of PITTCON 2001 Poster (Wednesday 2184P) :   Increasing Throughput of Environmental Samples in GC/MS using Mathematical Deconvolution on Data from Chromatography that is Four to Six Times Shorter than Typical.

Hits: 1553
file icon ACS 2002 Posterhot!
31.01.2006
Reprint of Poster for ACS 2002 entitled:  Mass Spectra Based Fraction Collection of Proteins and Peptides - Cheap, Quick and Dirty.
Hits: 1702


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