
Keywords: AM251; 1-(2,4-dichlorophenyl)-5-(4-iodophenyl)-4-methyl-N-(1-piperidyl)pyrazo-le-3-carboxamide; BSA; bovine serum albumin; DAMGO; [d-Ala2, N-MePhe4, Gly-ol]-enkephalin; DIEA; diisopropylethylamine; DMF; dimethylformamide; EGTA; ethylene glycol-bis(2-amino