Morphinan-6-ol, 4,5-epoxy-3-methoxy-17-methyl-, (5α,6α)-, (2R,3R)-2,3-dihydroxybutanedioate (1:1) (salt), mixt. with sodium [(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)methylamino]methanesulfonate