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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 159-160 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die 6-Alkoxy-5H-benzo[α]phenothiazin-5-one 3 wurden in einem einfachen Verfahren durch Umsetzung von 5H-Benzo[α]phenothiazin-5-on (1) mit Silbernitrat und Ammonium-peroxydisulfat in wäßrig-alkoholischer Lösung hergestellt.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1982 (1982), S. 1573-1574 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Eine einfache Synthese von 1- und 3-Acetylphenothiazinen1-Acetylphenothiazin (2) und 3-Acetylphenothiazin (3) können photochemisch aus 10-Acetyl-phenothiazin (1) hergestellt werden.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1982 (1982), S. 1403-1404 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Eine neue, bequeme Synthese von 4-Alkyl-3H-phenothiazin-3-onen4-Alkyl-3H-phenothiazin-3-one wurden durch eine neue und einfach durchzuführende Methode aus 3H-Phenothiazin-3-on (1), Carbonsäuren und Silbernitrat in wäßrigem Acetonitril hergestellt.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 161-163 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die 2-Dialkylamino-3H-phenoxazin-3-one 1 wurden durch Photolyse oder Pyrolyse zu 2-Alkylamino-3H-phenoxazin-3-onen 2 entalkyliert.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0268-2605
    Keywords: Interaction ; arsenic ; selenium ; monomethylarsonic acid ; dimethylarsinic acid ; dimethylselenide ; trimethylselenonium ion ; metabolites ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The interaction of arsenic and selenium compounds on the metabolism of these elements in golden hamsters was studied. Golden hamsters were divided into three groups and administered sodium selenite (Na2SeO3), sodium arsenite (NaAsO2) and Na2SeO3 with NaAsO2, respectively, by a single Subcutaneous injection of 25 m̈mol kg-1 body weight as As or Se (arsenic and selenium were calculated as weight of elemental arsenic and selenium). Selenium and arsenic metabolites were determined by high-performance liquid chromatography-graphite furnace atomic absorption spectrometry (HPLC-GFA AA) and gas chromatography (GC). The results show (1): About 10% by weight of the given dose of selenium was excreted in expiration air as dimethylselenide (Me2Se) during 12 h after administration of Na2SeO3. Excretion of dimethylselenide with the respiratory air was inhibited by administration of Na2SeO3 simultaneously with NaAsO2. (2) Giving Na2SeO3 plus NaAsO2 had no appreciable effect on the excretion of the trimethylselenonium ion (Me3Se+) into the urine and the feces. (3) Giving Na2SeO3 plus NaAsO2 increaed the excretion into the feces of an insoluble unknown-structure selenium compound, the proportion of which was 10.9% by weight of the given dose of selenium. (4) Giving NaAsO2 plus Na2SeO3 decreased the excretion of dimethylarsinic acid (Me2AsOOH) and inorganic arsenic into the urine during 120 h after the administration of the reagents, the decreased amount being 5.3% (dimethylarsinic acid) and 7.7% (inorganic arsenic) of the given dose of arsenic, respectively. (5) Giving NaAsO2 plus Na2SeO3 increased the excretion into feces of insoluble unknown-structure arsenic compound and inorganic arsenic, the increased amounts being 10.6% and 7.0% of the given dose of arsenic, respectively. (6) Giving NaAsO2 plus Na2SeO3 decreased the excretion into feces of extractable unknown-structure arsenic compound, and the decreased amount was 4.9% of the given dose of arsenic. (7) It made little difference to the excretion of monomethylarsonic acid [MeAsO(OH)2] into urine and feces and of dimethylarsinic acid (Me2AsOOH) into feces whether NaAsO2 was administered alone or with Na2SeO3.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reaktionen von 5H-Benzo[a]phenothiazin-5-on mit Alkyl- und Arylradikalen
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0894-3230
    Keywords: Organic Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Photoresponse of the poly(vinyl chloride) membranes, which contain spirobenzopyran and crown ether, covered with a urease layer was studied in the presence and absence of urea. In the absence of urea, UV light irradiation induced more than 160 mV of membrane potential change, whereas the photoresponse decreased with an increase in the concentration of urea in the solution. The effects of such operating variables as crown loading and pH and ionic strength in the aqueous phase on the potentiometric response were also elucidated in the presence of urea. The results were explicated using the fact that the local concentration on NH4+ and H+ ions changed as a result of the urease-catalyzed decomposition reaction of urea.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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