New N-phenylpyrazole derivatives of the formula: ##STR1## (wherein R.sup.12 represents a chlorine atom, R.sup.13 represents a hydrogen, fluorine or chlorine atom, R.sup.14 represents a hydrogen or fluorine atom and R.sup.15 represents a hydrogen, fluorine or chlorine atom, with the proviso that when R.sup.14 represents a fluorine atom, R.sup.15 represents a fluorine or chlorine atom, or R.sup.12, R.sup.13 and R.sup.15 each represents a fluorine atom and R.sup.14 represents a hydrogen or fluorine atom) possess useful herbicidal properties.
新的N-苯基
吡唑衍
生物的
化学式:##STR1##(其中R.sup.12代表
氯原子,R.sup.13代表氢、
氟或
氯原子,R.sup.14代表氢或
氟原子,R.sup.15代表氢、
氟或
氯原子,但当R.sup.14代表
氟原子时,R.sup.15代表
氟或
氯原子,或者当R.sup.12、R.sup.13和R.sup.15分别代表
氟原子,而R.sup.14代表氢或
氟原子时)具有有用的除草性能。