The constituents of commercial chrysarobin / by H.A.D. Jowett, and C.E. Potter.

  • Jowett, H. A. D. (Hooper Albert Dickinson)
Date:
[1902]
Catalogue details

Licence: In copyright

Credit: The constituents of commercial chrysarobin / by H.A.D. Jowett, and C.E. Potter. Source: Wellcome Collection.

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    pLVII. — The Constituents of Commercial Chrysarohin. By Hooper Albert Dickinson Jowett and Charles Etty Potter. Chrysarobin is a substance obtained from Araroba or Goa powder by extracting with certain solvents, for example, chloroform, evaporating to dryness, and powdering. It was first examined in 1875 by Attfield (Pharvi. J. 1875, [iii], 5, 721), who found the chief constituent to be chrysophanic acid, C15H10O4, identical with that previously obtained from rhubarb by Schlossberger and Dopping (Annalen, 1844, 60, 213). In 1878, Liebermann and Seidler (Her., 11, 1603) showed that chrysarobin was not identical with chrysophanic acid, but contained a distinct substance, chrysarobin, CsoH2607, together with a varying amount of chrysophanic acid into which it was converted by oxidation The formula assigned to chrysarobin was deduced from analyses of the