Boc-NH-PEG8-CH2CH2COOH is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.

Suc-Leu-Tyr-AMC is a fluorescent substrate for calpain I and II, papain (another cysteine protease), and is used to measure the chymotrypsin-like peptidase activity of the 20S proteasome (excitation max: 360 nm; emission max: 460 nm). Suc-Leu-Tyr-AMC can also be cleaved by the Ti protease from E. coli.

Kaempferol-3-O-β-D-glucosyl(1-2)rhamnoside is a natural peoduct isolated from Arabian jasmine.