the optical isomers of methadone , alpha-methadol , alpha-acetylmethadol and their n-demethylated derivatives have been systematically studied for their effects on the binding of 3h-dihydromorphine ( 3h-dhm ) and 3h-naloxone ( 3h-nlx ) to opiate receptors in rat brain homogenate .
C0025605
methadone
C0025607
acetylmethadol