The title compound. C21H26NO4+·Br−. also known as R-methylnaltrexone (MNTX) bromide. is a selective peripherally acting μ-opioid receptor antagonist with a oroxymorphone skeleton. https://www.diegojavierfares.com/best-price-TaylorMade-P790-Aged-Copper-Irons-Steel-super-grab/