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  • 1970-1974  (2)
  • Organic Chemistry  (1)
  • Ultra-Micro Method  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Pflügers Archiv 343 (1973), S. 179-183 
    ISSN: 1432-2013
    Keywords: Inulin Measurement ; Ultra-Micro Method ; Sphere Attachment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A simple method using glass capillaries instead of microcuvettes for measurement of inulin in nanoliter samples is given. Inulin was determined with anthron reagent (5 or 10 nl samples +3 μl anthron reagent). Glass capillary tubes (o.d.=1 mm, i.d.=0.68 mm, length=150 mm) in which the chemical reaction took place during incubation at 56°C were directly introduced into the optical system of a Zeiss spectrophotometer PMQ II with sphere attachment and objective. Extinction was measured vertically to the axis of the capillary. The changes of extinction of 20 different capillaries with the blank at different positions was only 1.13×10−3. The exactness of measurement in the concentration range of 100 ≤ 200 ≥ 400 ≥ 750 ≥ 1500 ≥ 3000 mg-% inulin was for 5nl/3 μl: 19.8 ≥ 11.0 ≥ 6.7 ≥ 4.7 ≥ 3.0 2.2%. 10nl/3 μl: 13.0 ≥ 8.4 ≥ 5.1 ≥ 3.9%. This method of measurement may also be applicable for other colorimetric reactions with nanoliter samples.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1974 (1974), S. 982-989 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of the C-terminal Octapeptide Having the Sequence Proposed for ScotophobinThe synthesis of the C-terminal octapeptide having the structure proposed for scotophobin is described. The peptide was constructed in such a manner that a radioactive amino acid could be incorporated for radioimmunological studies. The optical purity of all intermediates was investigated by gas chromatography.
    Notes: Die Synthese des C-terminalen Octapeptids mit der vorgeschlagenen Struktur für Scotophobin wird beschrieben. Das Peptid wurde so aufgebaut, daß später eine radioaktive Aminosäure für radioimmunologische Untersuchungen eingebaut werden kann. Unter Anwendung gaschromatographischer Methoden wurde die optische Reinheit aller Zwischenprodukte untersucht.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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