Indole is an aromatic heterocyclic organic compound. It has a bicyclic structure consisting of a six-membered benzene ring fused to a five-membered nitrogen-containing pyrrole ring.

Dihydroartemisinin is widely used as an intermediate in the preparation of other artemisinin-derived antimalarial drugs, is recommended as the first-line anti-malarial drug with low toxicity. Dihydroartemisinin possesses promising anticancer activities and induce cancer cell death through apoptotic pathways.

(1S,2S)-threo-Honokitriol is a natural product of Magnolia, Magnoliaceae. (1S,2S)-threo-Honokitriol can be used as a reference standard.