Genista tinctoria
It was first isolated in 1899 from the dyer's broom, "Genista tinctoria"; hence, the chemical name. The compound structure was established in 1926, when it was found to be identical with that of prunetol. It was chemically synthesized in 1928. It has been shown to be the primary secondary metabolite of the "Trifolium" species and "Glycine max L".