76986-89-5 Brompton mixture Brompton's mixture Morphinan-3,6-diol, 7,8-didehydro-4,5-epoxy-17-methyl-, (5alpha,6alpha)-, mixt. with (1R-(exo,exo))-methyl 3-(benzoyloxy)-8-methyl-8-azabicyclo(3.2.1)octane-2-carboxylate