Morphinan-6-one,17-(cyclopropylmethyl)-4,5a-epoxy-14-hydroxy-3-methoxy- (8CI); 3-Methoxynaltrexone;3-O-Methylnaltrexone; N-Cyclopropylmethylnoroxycodone; Naltrexone-3-methylether; O3-Methyl-(-)-naltrexone
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