Composition #8: Theiler, Barbara A., Revoltella, Silvia., Zehl, Martin., Dangl, Christina., Caisa, Lugardo O. Espinoza., Koenig, Juergen., Winkler, Johannes., Urban, Ernst., Glasl, Sabine. Secundarellone A, B, and C from the leaves of Justicia secunda VAHL. phytochemistry letters, 2014, vol. 10, p. CXXIX–cxxxii. DOI: 10.1016/j.phytol.2014.05.007.
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