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  • 1
    Electronic Resource
    Electronic Resource
    Reversed phase liquid chromatography of some benzimidazole derivatives (1993)
    Springer
    Chromatographia 37 (1993), S. 98-104 
    Details
    ISSN: 1612-1112
    Keywords: Column liquid chromatography ; Thin layer chromatography ; Benzimidazole ; Retention behaviour in RP systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The retention behaviour of a series of benzimidazole derivatives has been studied as a function of the water content of aqueous methanol and aqueous acetonitrile eluents. The relationship between the retention constant (log k) and the pH of the aqueous phase was linear, with slope values depending on the composition of the aqueous phase, the molecular structure of the compound, and the type of C-18 bonded stationary phase. The type of organic modifier significantly affected the shape of the relationship between log k and the volume fraction of organic modifier in the mobile phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02272196
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Role of the solvent in thin-layer chromatography of steroids on alumina (1984)
    Springer
    Chromatographia 18 (1984), S. 37-40 
    Details
    ISSN: 1612-1112
    Keywords: Thin-layer chromatography ; Alumina ; Retention relationships ; Steroids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The effects of different binary solvents on the retention behaviour of some steroids in thin-layer chromatography on alumina were studied. The slope of the linear relationship between the retention constant of the steroid and the logarithm of the volume fraction fo the polar component in the binary solvent mixture depends predominantly on the diluent. Linear relationships between the axis intercepts and slopes of particular steroids exists for all chromatographic systems examined. The slope of this relationships is a function of the retention constant of the steroid hydroxyl group.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02279463
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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