Polygalaxanthone XI 是从 Polygala tenuifolia 皮质中分离得到的一种氧杂蒽酮糖苷，可用于祛痰和促进精神安定类的研究。

3-叔丁基-对羟基苯甲醚是一种通过水氯化产生的抗氧化剂。

2-heptyl-3-hydroxy-4(1H)-Quinolone (Pseudomonas Quinolone Signal) is a quorum-sensing signalling molecule produced by Pseudomonas aeruginosa in response to increased cell density. It increases the expression of the lasB gene in P. aeruginosa, the secretion of the metabolites pyocyanin and the lectin PA-IL, as well as increasing biofilm production in P. aeruginosa populations. It also reduces the iron content of the P. aeruginosa growth medium when used at a concentration of 40 μM and acts as an iron chelator in iron sulphate solutions.