Glucosides of substituted cyclopentenone cyanohydrins have hitherto been reported only in plants in the Flacourtiaceae and taxonomically related families (1,2). We have shown recently that extracts of Arraeu hwta butterflies (Acraeinae) contain the same cyanoglucoside as their food plant, Kiggelaria africana L. (Flacourtiaceae) (3). It was, therefore, of interest to isolate and identify this compound. Fresh leaves of K. africana were macerated and extracted with hot 96% EtOH, the concentrated extract was defatted and concentrated to a syrup. A portion was chromatographed on a silica gel column, positive fractions were rechromatographed, and gynocardin precipitated out (1.5 g, 0.8% leaf wt). The physical, analytical, and spectral data for both the recrystallized (iPtOH) product and its hexaacetate were in accord with that for gynocardin (6).