A Cu(I)-stabilizing ligand that shows high activity in accelerating the Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC); BTTAA-Cu(I) catalyst is the optimal choice for cell surface azide-alkyne ligation, mediates CuAAC and copper-free click chemistry.

A simple DBCO-containing building block used to derivatize carboxyl groups in the presence of activators (e.g. EDC, or DCC) or activated esters (e.g. NHS esters) with DBCO moiety through a stable amide bond.

Amino-PEG8-Boc is a cleavable 8 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Amino-PEG8-Boc is also a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.