Product Description: Boc-NH-PEG3-C2-triazole-DBCO-PEG4-VC-PAB-DMEA is a double claevable 3-unit and 4-unit PEG linker for antibody-agent-conjugation (ADC). Boc-NH-PEG3-C2-triazole-DBCO-PEG4-VC-PAB-DMEA also is a PROTAC linker that can be used in the synthesis of PROTACs.