Apcin-A is an anaphase-promoting complex (APC) inhibitor. It interacts strongly with Cdc20 and inhibits the ubiquitination of Cdc20 substrates. Apcin-A can be used to synthesize the PROTAC CP5V.
Bis-PEG5-acid (PROTAC Linker 36) is a polyethylene glycol (PEG) linker employed for the synthesis of CP5V, a PROTAC that selectively degrades Cdc20[1].