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  • 1
    Electronic Resource
    Electronic Resource
    Extraction of polychlorinated biphenyl with supercritical carbon dioxide, sulfur hexafluoride and subcritical water (2000)
    Springer
    Fresenius' journal of analytical chemistry 367 (2000), S. 89-90 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract In the extraction of spiked PCB from soil, three extracting fluids were investigated: supercritical carbon dioxide (CO2), supercritical sulfur hexafluoride (SF6) and subcritical water. Among the tested fluids SF6 appeared to be appropriate especially for the extraction of low polar PCB. CO2 and water were found to be suitable for the quantitative extraction of all PCB. Water was judged as the best because of its low price, good availability and environmental safety.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160051605
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  • 2
    Electronic Resource
    Electronic Resource
    Analytische Charakterisierung von Palatinit (1979)
    Springer
    European food research and technology 168 (1979), S. 125-130 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Zusammenfassung Das Reaktionsprodukt der katalytischen Hydrierung von Isomaltulose (Palatinose) ist eine Mischung vonα-d-Glucopyranosido-1,6-sorbit undα-d-Glucopyranosido-1,6-mannit und wird als Palatinit bezeichnet. Seine Eignung als potentieller Zuckeraustauschstoff macht Methoden zur Identifizierung und Charakterisierung der Hydrierungsprodukte und zur Bestimmung von Palatinit als Bestandteil von Lebensmitteln und biologischem Material erforderlich. Mehrere Arbeitsvorschriften werden detailliert wiedergegeben; sie umfassen Dünnschicht- und Gaschromatographie ebenso wie enzymatische und chemische Bestimmungsmethoden.
    Notes: Summary The reaction product of the catalytic hydrogenation of isomaltulose (palatinose) is a mixture ofα-d-glucopyranosido-1,6-sorbitol and α-d-glucopyranosido-1,6-mannitol designated palatinit. Because of its high potential as a sugar substitute methods for the identification and characterization of hydrogenation products and for the determination of palatinit as an ingredient in food preparations and biological samples are required. Several working procedures are described in full detail including thin layer and gas chromatography as well as enzymatic and chemical determinations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01127518
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  • 3
    Electronic Resource
    Electronic Resource
    The pharmacokinetics of furazlocillin in healthy humans (1983)
    Springer
    Journal of pharmacokinetics and pharmacodynamics 11 (1983), S. 5-30 
    Details
    ISSN: 1573-8744
    Keywords: furazlocillin acylureido penicillin ; stability ; microbiological ; high pressure liquid chromatography assays ; red cell partitioning ; plasma protein binding ; healthy humans ; posture independent ; dose dependent pharmacokinetics of disposition ; pharmacokinetics of the penicilloic acid derivative
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The pharmacokinetics of the novel acylureidopenicillin furazlocillin, 6-[D-2-(3-furfurylidenamino-2-oxo-imidazolidine-1-carboxamido)-2-(4-hydroxyphenyl)-acetamido]-penicillanic acid and of its penicilloic acid derivative were investigated in five healthy male volunteers after intravenous administration of 2 and 4 g dosages. The volunteers were either in a lying or sitting position throughout the duration of the studies. The concentrations of the drug in plasma and urine were measured by two different methods in parallel: a microbiological assay and a newly developed high pressure liquid chromatography method. The latter method was also applicable for quantitation of the penicilloic acid derivative in these biological fluids. The drug's plasma protein binding (66%) and apparent red cell-plasma partition coefficient (0.055) were concentration independent. The pharmacokinetics of the drug were first order only at the lower dose level The apparent half lives of three distinguishable phases were, respectively, 4 $$(t_{1/2_1 } )$$ , 18 $$(t_{1/2_2 } )$$ , and 64 $$(t_{1/2_z } )$$ .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01061765
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  • 4
    Electronic Resource
    Electronic Resource
    Anellierungsreaktionen von N-Heterocyclen zu kondensierten Pyridonen mit Stickstoffbrückenatom (1980)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1980 (1980), S. 542-556 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Annelation Reactions of N-Heterocycles to Condensed Pyridones with Bridgehead NitrogenThe Horner-Wittig reaction of aromatic and heteroaromatic aldehydes with phosphono succinates gives the methylenesuccinates 2a - m and 4a - k in satisfactory yields. The compounds obtained have the E-configuration, as shown by 1H-NMR-spectroscopic and by chemical investigations. When heterocyclic aldehydes 3a - m having a formyl function in the α-position to a nitrogen atom are used in this reaction, pyridones 5a - m with bridgehead nitrogen can be obtained directly or via the methylene succinates.
    Notes: Die Horner-Wittig-Reaktion von aromatischen und heteroaromatischen Aldehyden mit Phosphonobernsteinsäureestern führt zu den Methylenbernsteinsäureestern 2a - m und 4a - k in befriedigenden Ausbeuten. Wie durch 1H-NMR-spektroskopische und chemische Untersuchungen gezeigt wird, haben diese Verbindungen E-Konfiguration. Setzt man die heterocyclischen Aldehyde 3a - m mit Formylgruppe in α-Stellung zu einem Stickstoffatom um, so können  -  direkt oder über die Methylenbernsteinsäureester  -  die kondensierten Pyridone 5a - m erhalten werden.
    Additional Material: 8 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198019800408
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    Paper (German National Licenses)
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