Výsledky vyhledávání - "H. G. Boettger"

Combined gas chromatography and mass spectrometry of aromatic β-carbolines

Autor: D.W. Shoemaker, M. Evans, T.G. Bidder, J.T. Cummins, H. G. Boettger

Publikováno v: Journal of Chromatography A. 174:159-164

A method is described for the analysis of substituted aromatic β-carbolines employing gas chromatography combined with mass spectrometry (GC-MS). The spectra of the β-carbolines obtained by GC-MS are presented. Mass spectrometric patterns have been

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::edcc0701786c1f4a18ce369a4f19df67
https://doi.org/10.1016/s0021-9673(00)87046-6

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Identification of harman in the rat arcuate nucleus

Autor: M. Evans, J.T. Cummins, T.G. Bidder, D.W. Shoemaker, H. G. Boettger

Publikováno v: NaunynSchmiedeberg's Archives of Pharmacology. 310:227-230

This communication describes the presence of 1-methyl-beta-carboline (harman) in the hypophysiotropic area of the hypothalamus which incorporates the arcuate nucleus. Diethyl ether extracts of borate-buffered arcuate homogenates were subjected to sil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60853d878ada7179c06bc8f196332b85
https://doi.org/10.1007/bf00499914

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Studies in chemical ionization mass spectrometry of some flavonoids

Autor: David. Issachar, H. G. Boettger, Jehuda Yinon

Publikováno v: Organic Mass Spectrometry. 13:167-171

Formation of ions in chemical ionization mass spectrometry of flavonoid compounds has been studied. Production of adduct ions and fragment ions as a function of ring substituents and of reagent gas has been observed. Pressure and repeller field depen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3bdb8b9c19d4c7610210f7d4576c080a
https://doi.org/10.1002/oms.1210130310

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Modification of an AEI/GEC MS9 High-Resolution Mass Spectrometer for Electron Impact/Chemical Ionization Studies

Autor: J. Yinon, H. G. Boettger

Publikováno v: Instrumentation Science & Technology. 4:103-113

A double-focusing MS9 mass spectrometer has been modified to permit operation in both chemical ionization (CI) and electron impact (EI) modes. The modifications consist mainly of a closed ion chamber, a high capacity pumping system, a reactant gas in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d74ebe608665fe55360bd715fcdff3dc
https://doi.org/10.1080/10739147208543339

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