An N-benzoyl-N'-pyridazinyloxyphenyl urea compound having the formula: ##STR1## wherein each of X.sub.1 and X.sub.2 is a hydrogen atom, a halogen atom or a nitro group, Y is a hydrogen atom, a halogen atom or a methyl group which may be substituted by fluorine, and Z is a hydrogen atom, a halogen atom or a trifluoromethyl group, provided that when X.sub.1 is a hydrogen atom and X.sub.2 is a hydrogen atom or a halogen atom, Y is a methyl group which may be substituted by fluorine and/or Z is a hydrogen atom or a trifluoromethyl group. The compound is useful as an active ingredient for an antitumorous composition.
一种具有以下结构式的N-苯甲酰-N'-
吡啶氧基苯基
脲化合物:##STR1## 其中X1和X2分别是氢原子、卤素原子或硝基基团,Y是氢原子、卤素原子或甲基基团,该甲基基团可以被
氟取代,而Z是氢原子、卤素原子或三
氟甲基基团,但当X1是氢原子且X2是氢原子或卤素原子时,Y为可被
氟取代的甲基基团,而Z为氢原子或三
氟甲基基团。该化合物可作为抗肿瘤组合物的活性成分。