Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Steven R. Witowski"'
Autor:
Karsten Koppetsch, John C. Amedio, Jonathan E. Scherer, Vincent Jacques, Shirley Kalogeropoulos, Lombardy Richard John, Kevin L. Zhou, Stuart Levy, Steven R. Witowski, Kelly Schumacher
Publikováno v:
Organic Process Research & Development. 13:535-542
A process for the multigram asymmetric synthesis of the chiral tetraazamacrocycle 2-(R)-2-(4,7,10-tris tert-butylcarboxymethyl-1,4,7,10-tetraazacyclododec-1-yl)-pentanedioic acid, 1-tert-butyl ester ((R)-tert-Bu4-DOTAGA, 4) has been devised and demon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ed6148440a7765d90029c845e9bf32e
https://doi.org/10.1021/op8002932
https://doi.org/10.1021/op8002932
Autor:
Rebecca D. Rostand, Jacinth A.M McKenzie, Robert T. Kennedy, Steven R. Witowski, Christopher J. Watson, Igor German
Publikováno v:
Journal of Chromatography A. 962:105-115
A method for the separation and quantitative determination of neuroactive amino acids (aspartate, glutamate, citrulline, arginine, glycine, taurine, gamma-aminobutyric acid) and neuroactive amines (noradrenaline, dopamine and serotonin) in a single c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec8db409e51e2d88bcc0449a31e15791
https://doi.org/10.1016/s0021-9673(02)00533-2
https://doi.org/10.1016/s0021-9673(02)00533-2
Autor:
Rebecca R. Rostand, Ziqiang Wang, Christopher J. Watson, William E. Haskins, David H. Powell, Steven R. Witowski, Robert T. Kennedy
Publikováno v:
Analytical Chemistry. 73:5005-5014
Fused-silica capillary LC columns (25-microm i.d.) with 3-microm-i.d. integrated electrospray emitters interfaced to a quadrupole ion trap mass spectrometer were evaluated for high-sensitivity LC-MS2. Column preparation involved constructing frits by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4be7811b443c3360ae0d93e8b4eb7508
https://doi.org/10.1021/ac010774d
https://doi.org/10.1021/ac010774d
Publikováno v:
Analytical Chemistry. 72:865-871
A sensitive method was developed to determine 16 amino acids, including all the neurotransmitter amino acids and neuromodulators, in physiological samples. Samples were derivatized with o-phthalaldehyde/tert-butyl thiol followed by two scavenging rea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78dbbb6f703558a5c9eee51fb31d7a12
https://doi.org/10.1021/ac990872n
https://doi.org/10.1021/ac990872n
Publikováno v:
Chemical Reviews. 99:3081-3132
Separations are generally considered a slow step in any analytical methodology. HPLC and electrophoresis, the mainstay of separations of nonvolatile compounds in the modern laboratory, take anywhere from tens of minutes to hours to complete depending
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9982d0713ecb824efcfd7d73ef5228b0
https://doi.org/10.1021/cr980134j
https://doi.org/10.1021/cr980134j
Publikováno v:
Analytical Chemistry. 71:987-994
The separation and detection of biuret complexes of neuropeptides by capillary liquid chromatography with electrochemical detection was explored. Capillaries of 25-micron inner diameter packed with base-resistant, polymer-based reversed-phase particl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32b3483ca2f097d265752fac9e9b0652
https://doi.org/10.1021/ac9809837
https://doi.org/10.1021/ac9809837
Publikováno v:
ChemInform. 30
Separations are generally considered a slow step in any analytical methodology. HPLC and electrophoresis, the mainstay of separations of nonvolatile compounds in the modern laboratory, take anywhere from tens of minutes to hours to complete depending
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d6c772d3409f6c424daef9fb2b0eec5
https://doi.org/10.1002/chin.199950300
https://doi.org/10.1002/chin.199950300
Autor:
Michael I Sandstrom, Steven R. Witowski, George V. Rebec, Rebecca D. Rostand, Robert T. Kennedy
Publikováno v:
Neuroscience letters. 378(3)
To determine if extracellular ascorbate, which may increase by several hundred micromolar in striatum during behavioral activation, directly alters glutamate transmission, we monitored striatal glutamate transients evoked by electrical stimulation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e77d61c56ca69a11b899d2ece4ccfe0
https://pubmed.ncbi.nlm.nih.gov/15781152
https://pubmed.ncbi.nlm.nih.gov/15781152
Autor:
Stuart G. Levy, Vincent Jacques, Kevin Li Zhou, Shirley Kalogeropoulos, Kelly Schumacher, John C. Amedio, Jonathan E. Scherer, Steven R. Witowski, Richard Lombardy, Karsten Koppetsch
Publikováno v:
Organic Process Research & Development; May2009, Vol. 13 Issue 3, p535-542, 8p
Autor:
Steven R. Witowski, Robert T. Kennedy
Publikováno v:
Scopus-Elsevier
ResearcherID
ResearcherID
The chromatographic performance of capillaries with 20 and 50 μm inner diameter (i.d.) packed with 4.5 and 3.0 μm nonporous particles was evaluated under conditions of pressure- and electroosmotically-driven flow for unretained analytes with the go
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bae1c0932518dafb9fdd619ad17457b6
http://www.scopus.com/inward/record.url?eid=2-s2.0-0000148206&partnerID=MN8TOARS
http://www.scopus.com/inward/record.url?eid=2-s2.0-0000148206&partnerID=MN8TOARS
