Tirzepatide has a similar sequence to semaglutide, and the lys side chain in the sequence has PEG modification, which is the functional group of the polypeptide, and can increase the water solubility of the sequence. The main physiological function of Tirzepatide is glucose-dependent  nutrition polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptor double agonist, which is being developed for the treatment of type 2 diabetes and has entered the clinical stage.