| Naloxone | IC50 | 9.0 [1], 127.0 [2] |
| Naltrexone | IC50 | 2.6 [1], 12.0 [2] |
| trans-3,4-Dichloro-N-methyl-N-[2-(1-pyrrolidinyl)cyclohexyl]-benzeneacetamide | IC50 | 5.0 [1], 3100.0 [2] |
| Levallorphan | IC50 | 0.67 [1], 2.6 [2] |
| Cyprodime | IC50 | 170.0 [1], 628.0 [2] |
| N-[(4R,4As,7S,7aR,12bS)-4a,9-dihydroxy-3-methyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]acetamide | IC50 | 66.8 [1] |
| N,N'-Bis[(4R,4aS,7S,7aR,12bS)-4a,9-dihydroxy-3-methyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]butanediamide | IC50 | 30.2 [1] |
| N,N'-Bis[2-[[2-[[2-[[(4R,4aS,7S,7aR,12bS)-4a,9-dihydroxy-3-methyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]amino]-2-oxoethyl]amino]-2-oxoethyl]amino]-2-oxoethyl]butanediamide | IC50 | 25.1 [1] |
| N,N'-Bis[2-[[2-[[(4R,4aS,7S,7aR,12bS)-4a,9-dihydroxy-3-methyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]amino]-2-oxoethyl]amino]-2-oxoethyl]butanediamide | IC50 | 3.9 [1] |
| N,N'-Bis[2-[[(4R,4aS,7S,7aR,12bS)-4a,9-dihydroxy-3-methyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]amino]-2-oxoethyl]butanediamide | IC50 | 22.0 [1] |
| N,N'-Bis[(4R,4aR,7R,7aS,12bS)-4a,9-dihydroxy-3-methyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]butanediamide | IC50 | 15.7 [1] |
| N,N'-Bis[2-[[(4R,4aR,7R,7aS,12bS)-4a,9-dihydroxy-3-methyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]amino]-2-oxoethyl]butanediamide | IC50 | 19.2 [1] |
| N,N'-Bis[2-[[2-[[(4R,4aR,7R,7aS,12bS)-4a,9-dihydroxy-3-methyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]amino]-2-oxoethyl]amino]-2-oxoethyl]butanediamide | IC50 | 6.3 [1] |
| N-[(4R,4As,7R,7aR,12bS)-4a,9-dihydroxy-3-methyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]acetamide | IC50 | 45.9 [1] |
| N,N'-Bis[2-[[2-[[2-[[(4R,4aR,7R,7aS,12bS)-4a,9-dihydroxy-3-methyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]amino]-2-oxoethyl]amino]-2-oxoethyl]amino]-2-oxoethyl]butanediamide | IC50 | 12.6 [1] |