DSPE-PEG2000-Mal ammonium（Cat No.:I043448）is a modified lipid derivative commonly used in drug delivery systems, particularly in liposomal formulations. It consists of Distearoylphosphatidylethanolamine (DSPE) linked to a polyethylene glycol (PEG) chain, with a maleimide (Mal) group at the end. The maleimide functional group allows for covalent attachment to thiol-containing molecules, making it useful for targeted drug delivery and conjugation of therapeutic agents or antibodies. This modification enhances the stability, circulation time, and targeted delivery of drugs, improving the specificity and efficacy of treatments, especially in cancer therapy and gene delivery.