cyazofamid

Physico-Chemical Properties
Class :cyanoimidazole
 IUPAC name :4-chloro-2-cyano-N,N-dimethyl-5-p tolylimidazole-1-sulfonamide
 Molecular weight : 324.8
 Molecular formula : C13H13ClN4O2S
 Vapour pressure :< 1.33x10-2 mPa (35°C)
 Water solubility :   0.107 mg/L(pH 7, 20°C)
 Form : Ivory, odourless powder
 Development code :   IKF-916

Application
Cyazofamid is applied at 80-100 g a.i./ha with foliar spray just before rst disease symptoms are observed to control Oomycete diseases, such as late blight in potatoes, tomatoes, pepper and other vegetables, and downy mildew in grapevine, cucumber, melon and others.

Mode of ActionC
Cyazofamid has proven to control Oomycetes by respiratory inhibition speci cally at ComplexⅢ in the mitochondria of Oomycetes. Cyazofamid inhibits Qi (Quinone inside reducing site) of ComplexⅢ of the said oomycetes, which has not been so far reported for other fungicides. It is classi ed to FRAC code 21.