the analgesic potency of ethyl-n- [ 2-amino-6- ( 4-fluorophenylmethylamino ) pyridin-3-yl ] carb ama te ( flupirtine , d 9998 ) in mice and rats in haffner 's test , electro-pain test and randall-selitto test ( inflammation induced pain ) lies between the more potent dextromoramide and methadone and the more weakly active pethidine , dextropropoxyphene , codeine , phenacetin and paracetamol .
C0030193
pain
C0009214
codeine