Thalidomide-O-amido-PEG3-C2-NH2 TFA (Standard) is the analytical standard of Thalidomide-O-amido-PEG3-C2-NH2 TFA (HY-103611). This product is intended for research and analytical applications. Thalidomide-O-amido-PEG3-C2-NH2 TFA is a synthesized E3 ligase ligand-linker conjugate that incorporates the Thalidomide based cereblon ligand and 3-unit PEG linker used in PROTAC technology.