These are compounds that bind to opioid receptors in the brain, blocking the effects of narcotic drugs.
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1-Benzyl-3-(3-methoxy-phenyl)-piperidine-3-carboxylic acid ethyl ester
Cyclopropylmethyl-(4-methoxy-4-phenyl-1,2,3,4-tetrahydro-naphthalen-2-yl)-methyl-amine
Cyclopropylmethyl-[2-(4,5-dihydro-1H-imidazol-2-yl)-phenyl]-amine
