| 摘要 |
2-Chloro-4'-[N-(N'-benzoyl)-ureido]-diphenyl ethers of the formula <IMAGE> (I) in which R1 is fluorine, chlorine, bromine or methyl, R2 is hydrogen, fluorine or chlorine, R3 is hydrogen or chlorine, R4 is hydrogen, chlorine or methyl, R5 is hydrogen or chlorine, and R6 is nitro or trifluoromethyl. |
