Trityl-PEG-azide is a compound that belongs to the family of PEGylated azides. It is a bifunctional molecule composed of a polyethylene glycol (PEG) chain, an azide functional group, and a trityl protecting group. The PEG chain enhances water solubility, while the azide functional group allows for conjugation with other molecules using click chemistry. The trityl group serves to protect the azide functionality during chemical reactions until it is ready for use. Trityl-PEG-azide is commonly used in pharmaceutical research and development as a versatile building block for the synthesis of drug conjugates, imaging agents, and diagnostic tools. Its biocompatibility, water solubility, and ease of functionalization make it an attractive choice for these applications.