| 摘要 |
Substituted 1,2,4-triazinediones of the formula <IMAGE> in which R1 represents an optionally substituted aromatic heteroaromatic radical which is bonded via carbon, X represents O, S, SO, SO2 or <IMAGE> R2 represents one or more identical or different radicals from the group comprising hydrogen, halogen, nitro, alkyl, alkoxy, halogenoalkyl and halogenalkoxy, R3 represents hydrogen or optionally substituted alkyl, alkenyl, alkinyl or aralkyl, as well as their salts with bases. These compounds are useful for combating protozoa in insects.
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