3-hydroxy-4-aryl-5-oxo-pyrazoline derivatives

Plant protecting and regulating compositions – Plant growth regulating compositions – Organic active compound containing

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504197, 504219, 504281, 504282, 514 80, 514 85, 514 94, 514221, 514248, 514404, 514405, 540542, 540 567, 544232, 544234, 544235, 548114, 548116, 5483591, 5483631, 5483664, A01N 4358, C07D48704

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054749743

ABSTRACT:
There are provided new 3-hydroxy-4-aryl-5-oxo-pyrazoline derivatives of the formula (I) ##STR1## The new 3-hydroxy-4-aryl-5-oxo-pyrazoline derivatives of the formula (I) have a particularly pronounced activity against animal pests, in particular against insects and arachnids, and against weeds.

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