The new 1-phenyl-5-(1 H-pyrrol-1-yl) pyrazole-3-carboxamides were compared with the reference compounds AM251 and SR144528 for cannabinoid hCB1 and hCB2 receptor affinity. Compounds bearing 2, 4-dichlorophenyl or 2, 4-difluorophenyl groups at position 1 and 2, 5-dimethylpyrrole moiety at position 5 of the pyrazole nucleus were generally more selective for hCB1. On the other hand, the N-cyclohexyl group at the 3-carboxamide was ...