5r 4 5 epoxy 3 hydroxy 9alpha methylmorphinan 6 one, 4 5 epoxy 3 hydroxy 17 methylmorphinan 6 one, 4 5alpha epoxy 3 hydroxy 17 methyl 6 morphinanone
For the relief of moderate to severe pain such as that due to surgery, cancer, trauma/injury, or burns.