MS4078 is a novel PROTAC (degrader) of ALK, potently decreases cellular levels of oncogenic active ALK fusion proteins in a concentration- and time-dependent manner in SU-DHL-1 lymphoma and NCI-H2228 lung cancer cells (DC50=11 nM).

Amino-PEG11-amine, a PEG-based (12 units) PROTAC linker used to combine two mono diethylstilbestrol (DES)-based ligands, provides an alternative strategy for preparing more selective and active ER antagonists for endocrine therapy of breast cancer.

Alkynyl Stearic Acid is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs. PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins.