N-(ethoxycarbonyl)noroxycodone

(+)-14β-bromocodeine

6-O-desmethyl-diprenorphine

2-aminocarbonyldimethylmethylmethoxy-10,11-methylenedioxy-N-propylnoraporphine

6-methoxy-4-(2-methylamino-ethyl)-phenanthrene-1,5-diol