发明授权
US3954829A Halogenated 4-trifluoromethyl-4'-cyano-diphenyl-ether compounds 失效
卤代4-三氟甲基-4 {40-氰基 - 二苯基醚化合物

Halogenated 4-trifluoromethyl-4'-cyano-diphenyl-ether compounds
摘要:
Halogenated 4-trifluoromethyl-4'-cyano-diphenyl-ether compounds of the formula ##SPC1##In whichR is hydrogen, halogen, alkyl of from 1 to 4 carbon atoms, alkoxy of from 1 to 4 carbon atoms or alkylthio of from 1 to 4 carbon atoms,Are outstandingly effective as herbicides, particularly as selective herbicides.
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