AnthraquinonesRubiaceaeEmodinHydrogenRheumHydrogen BondingHydrogen PeroxideSenna ExtractMorindaSenna PlantRubiaSesamumCarmineRumexHydrogen SulfideCassiaIridoidsAnthracenesMolecular StructureAloeRhamnaceaePlant ExtractsHedyotisClusiaceaeArachnidaPlant BarkMagnetic Resonance SpectroscopyEurotiumPlants, MedicinalSecondary MetabolismMitoxantroneIntercalating AgentsScent GlandsNaphthoquinonesGlycosidesCatharticsEnediynesPlant RootsSpectrophotometry, InfraredPolygonumMutagenicity TestsNaphthacenesCissusColoring AgentsPlant Stems