61152-58-7Relevant academic research and scientific papers
Very long-chain phenylpropyl and phenylbutyl esters from Taxus baccata needle cuticular waxes
Jetter, Reinhard,Klinger, Adelheid,Sch?ffer, Stefanie
, p. 579 - 587 (2007/10/03)
The cuticular wax of Taxus baccata L. needles was found to contain four different classes of long-chain esters that were identified by various chemical transformations with product assignment employing GC-MS. Homologous series of (1) 3-(4′-hydroxyphenyl)-propyl esters of C20-C36 fatty acids, (2) 4-(4′-hydroxyphenyl)-2-butyl esters of C18-C28 fatty acids, (3) 3-(3′,4′-dihydroxyphenyl)-propyl esters of C20-C32 fatty acids, and (4) 4-(3′,4′-dihydroxyphenyl)-2-butyl esters of C18-C28 fatty acids were identified. The four compound classes amounted to 0.1-3.6 μg/cm2 of needle surface area, corresponding to 0.2-7.6% of the wax mixture, respectively. While both phenylpropyl ester series had a maximum for the homolog containing tetracosanoic acid, in the phenylbutyl esters homologs containing eicosanoic and docosanoic acids predominated.
Hair dyeing composition containing an aryldiamine and a substituted catechol
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, (2008/06/13)
A composition for use in the dyeing of keratinous fibre such as hair includes an aqueous anaerobic solution of an aryldiamine and a substituted catechol. Optionally, an aromatic coupling agent can also be incorporated in the composition to modify the shade of color produced. Anaerobic storage conditions can, for example, be maintained by packing the composition in an aerosol container with a halocarbon propellant.
