AnthraquinonesRubiaceaeEmodinRheumSenna ExtractMorindaSenna PlantRubiaSesamumCarmineRumexCassiaIridoidsMolecular StructureAnthracenesAloePlant ExtractsRhamnaceaeClusiaceaeHedyotisArachnidaPlant BarkMagnetic Resonance SpectroscopyPlants, MedicinalEurotiumIntercalating AgentsSecondary MetabolismMitoxantroneNaphthoquinonesGlycosidesSpectrophotometry, InfraredScent GlandsCatharticsStructure-Activity RelationshipPolygonumEnediynesPlant RootsNaphthacenesMutagenicity TestsColoring AgentsCissusPlant StemsSpectrometry, Mass, Fast Atom Bombardment