Pantolactone belongs to the class of organic compounds known as gamma-butyrolactones. gamma-Butyrolactones are compounds containing a gamma-butyrolactone moiety which consists of an aliphatic five-member ring with four carbon atoms one oxygen atom and bears a ketone group on the carbon adjacent to the oxygen atom.

Biotin-PEG8-amine is a PROTAC linker belonging to the PEG class and can be used to synthesize PROTAC molecules.

Carpesiolin