| 摘要 |
N-Benzoyl-N'-tert.-alkoxycarbonylphenyl-(thio) ureas of the formula <IMAGE> in which R1 represents halogen or alkyl, R2 and R3 independently of one another represent hydrogen or halogen, R4 represents alkyl, R5 and R6 either individually represent alkyl or together represent alpha , omega -alkanediyl and X represents oxygen or sulphur, which possess arthropodicidal properties. |
