A phenoxyalkanoylaminomethylphosphonic acid represented by the following formula (I) ##STR1## wherein X and Y are identical or different and each represents a hydrogen atom, a halogen atom, CF.sub.3 or an alkyl group having not more than 5 carbon atoms, Z represents CH or N, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and each represents a hydrogen atom or a lower alkyl group having 1 to 5 carbon atoms. The compound is useful, as a herbicide, for eradicating weeds, especially narrow-leaved weeds.
以下是
化学式为(I)的苯氧基烷酰胺
甲基膦酸,其中X和Y相同或不同,分别表示氢原子,卤素原子,CF.sub.3或不超过5个碳原子的烷基;Z表示CH或N;R1,R2,R3和R4相同或不同,分别表示氢原子或具有1至5个碳原子的低烷基。该化合物可用作
除草剂,用于消灭杂草,特别是狭叶草。