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  • Analytical Chemistry and Spectroscopy  (2,128)
  • 1970-1974  (2,128)
Collection
Keywords
Publisher
Years
Year
  • 11
    Electronic Resource
    Electronic Resource
    Observations on the mechanism of hydroxylation of cyclophosphamide by rat liver microsomes: The metabolism of cyclophosphamide-4-d2 (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 130-136 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The metabolism of cyclophosphamide-4-d2 (2-[bis(2-chloroethyl)amino]-tetrahydro-4,4-dideuterio-2H-1,3,2-oxazaphosphorine 2-oxide), was studied. The first detectable metabolite was a hydroxy derivative which was trapped with ethanol. Mass spectrometry of the resulting two ethoxy derivatives and of the deuterated acrolein 2,4-dinitrophenylhydrazones formed therefrom via reaction with acidic 2,4-dinitrophenylhydrazine, afforded evidence that the ethoxy substituents were at C-4, which was therefore the position of the original hydroxy substituent. The mass spectrum of the deuterated acrolein 2,4-dinitrophenylhydrazone obtained from the total reactive metabolites was used to estimate the ratio of 4- to 6-hydroxylation. The rate of metabolism and the antitumour activity of cyclophosphamide and its 4-d2 analogue were compared.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010209
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  • 12
    Electronic Resource
    Electronic Resource
    Mass spectral studies of airborne particulates and possible pollution sourcesWork supported in part by EPA under Agreement No. EPA-IAG-0217(D) entitled ‘Correlation of Hazardous Compound Composition of Coal, Ash, Fly-Ash, and Other Emissions from Combustion’. (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 137-141 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The organic material in airborne particulate matter is being studied by high resolution mass spectrometry to determine if hydrocarbons typical of major sources of pollution can be detected. Carbon number distributions and hydrogen-to-carbon ratios of components found in airborne particulate samples and the corresponding data for compounds detected in fuel combustion products show great similarity. Samples collected near large power stations and major airports were compared with typical urban particulate samples. Particulates collected from jet engine exhaust and a condensate from the stack effluent from a coal-fired combustion system were studied. Mass spectral data were obtained for an auto exhaust tar, a coal tar pitch and several fuels. The mass spectra of two total particulate samples, compared to the spectrum of an ether extract of the organic matter, indicate that direct vaporization can be used and extraction is not essential for qualitative mass spectral studies.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010210
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  • 13
    Electronic Resource
    Electronic Resource
    Analysis of intact phospholipids by field desorption mass spectrometry (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 154-155 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The first application of field desorption mass spectrometry to the analysis of intact diacyl glycerophosphorylcholines (lecithins) has led to the detection of prominent molecular ions. This technique enables positive identification of the components of a mixture of phosphatidylcholines, which will provide valuable information on the phospholipid composition of biological fluids.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010213
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  • 14
    Electronic Resource
    Electronic Resource
    Mass spectrometry of pesticides and pollutants, by S. Safe and O. Hutzinger. CRC Press Inc., Cleveland, Ohio, 1973. pp. 220, $32.00 (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 157-157 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010215
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  • 15
    Electronic Resource
    Electronic Resource
    News and events (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. xi 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010216
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  • 16
    Electronic Resource
    Electronic Resource
    Detection and quantitative analysis of amphetamine (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 159-162 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The high resolution mass spectrometric integrated ion current procedure has been used to identify and quantitate amphetamine, isolated as its dansyl derivative, as it is found after addition to urine and in tissues of the rat following intraperitoneal injection. A linear relationship between amphetamine and ion current response has been established at least in the range 5 × 10-12 to 5 × 10-7 g, and as little as 8 × 10-13 mol of amphetamine in urine may be detected.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010302
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  • 17
    Electronic Resource
    Electronic Resource
    Thin-layer chromatography-mass spectrometry for the identification of sapogenins from Digitalis species (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 166-168 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A method is described for the identification of the sapogenins of several Digitalis species. The steroids are separated by repeated development thin-layer chromatography and identified by means of high resolution mass spectrometry. The spectra of tigogenin, gitogenin, digalogenin and digitogenin are recorded. These spectra are of particular use in establishing the position of extra hydroxy moieties in the steroid nuclei. Several species of Digitalis were screened for their sapogenin content. D. purpurea, D. mertonensis and D. lutea were found to contain tigogenin and digitogenin in small amounts, the principal steroid being gitogenin, whilst D. ambigua and D. lanata contained all four steroids.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010304
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  • 18
    Electronic Resource
    Electronic Resource
    Intramolecular isotopic order in biologically produced acetic acid (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 172-174 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Acetic acid isolated from cider vinegar and inorganically synthesized glacial acetic acid have markedly different intramolecular isotopic distributions of the stable carbon isotopes. Carbon-12 is concentrated in the methyl group relative to the carboxyl group in the biologically produced acid. The reverse distribution is observed in the particular sample of glacial acetic acid examined here.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010306
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  • 19
    Electronic Resource
    Electronic Resource
    Identification of some organic smog components based on rain water analysis (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 192-194 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An analysis has been made of a sample of rain water collected in Washington, D.C. following a sustained photo-oxidant smog alert which was accompanied by haze and low visibility. The analysis was effected by purging the organic content from the water with helium gas and identifying the constituents by means of gas chromatography - mass spectrometry. The predominant compound was found to be 3-methylfuran, a possible intermediate or end product of the atmospheric decomposition of terpenoid hydrocarbons. The analysis suggests that the smog resulted from the air oxidation of hydrocarbons evolved from Appalachian forestation rather than from manassociated activities.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010309
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  • 20
    Electronic Resource
    Electronic Resource
    Source of the carboxamide nitrogen atom in 2-carboxamido-5-isopropoxycarbonylaminobenzimidazole, a metabolite of cambendazole (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 190-191 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Combined gas chromatography-mass spectrometry and isotope labeling techniques have been employed to demonstrate that the carboxamide nitrogen atom in 2-carboxamido-5-isopropoxycarbonylaminobenzimidazole, a metabolite of 2-thiazolyl-5-isopropoxycarbonylaminobenzimidazole (cambendazole), is derived wholly from the parent drug. [15N] Thiazole-labeled cambendazole was administered to a rat and the metabolite isolated from urine. Trideutero-2-carboxamido-5-isopropoxycarbonylaminobenzimidazole was employed as a carrier to isolate the metabolite in sufficient purity for isotope ratio measurements using multiple ion detection. The metabolite was converted to its tetramethyl derivative by on-column reaction with trimethylanilium hydroxide to permit satisfactory gas chromatography.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010308
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