Quercetin-3-O-sambubioside is a monomeric compound found in Eucommia ulmoides male flowers. Quercetin-3-O-sambubioside promotes the stimulation of the nerve center. Antioxidant and anticancer activities.

Sarracenin is a natural product. Sarracenin shows cytotoxic activities against tumor cells.

C004019 is a small molecule PROTAC capable of targeting tau for selective protein degradation from the cell, while recruiting tau and E3 ligase (Vhl) for selective enhancement of tau ubiquitination and proteollyzation. C004019 is a candidate for AD and related tau protein diseases.