| 摘要 |
<p>1-Benzoyl-3- 4-(4-nitrophenoxy)phenyl ureas of formula (where R is F, Cl or Me; R1 is H, Cl or F; R2 and R3 are H or Cl; provided that when R is Cl and R1 is H, both R2 and R3 are H). are insecticides with low mammalian and plant toxicity against caterpillars and Plutella maculipennis a concn. of 0.001% gave 100% destruction after 8 days.</p> |
