Pyridazin-3-one derivatives, their use, and intermediates for their production

   
   

Novel hydrazones having the following structural formula ##STR1## are provided, which are useful intermediates to form active ingredients of herbicides, wherein R.sup.3 is hydrogen, alkyl, haloalkyl, or alkoxy alkyl; and Q is [Q.sup.1 -1], [Q-2], [Q.sup.1 -3], [Q-4] or [Q-5] defined herein.

 
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