methylnaltrexone is a chemical compound registered under CAS number 83387-25-1, with the molecular formula C21H26NO4+ and a molecular weight of about 356.43 g/mol. It is also known as 17-(Cyclopropylmethyl)-4,5α-epoxy-3-methoxy-14-hydroxymorphinan-6-one; 3-Methoxy-14-hydroxy-17-(cyclopropylmethyl)-4,5α-epoxymorphinan-6-one; 3-O-Methylnaltrexone. ChemRoots supplies methylnaltrexone for laboratory research and bulk production; product code 1266768. Send an inquiry for purity, packaging, price and lead time.