| 摘要 |
4-Nitro-4'-[N-(N'-benzoyl)-ureido]-diphenyl ethers of the general formula <IMAGE> (I), in which R is chlorine, fluorine or methyl, R' is hydrogen, chlorine or fluorine, and R'' and R''' are identical and are each hydrogen or chlorine, but if R is chlorine and R' is hydrogen, R'' and R''' can only be hydrogen. |
