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Cyetpyrafen is an insecticide and acaricide. Currently little information is available regarding its environmental fate, ecotoxicology or impacts on human health.

Yizuomanjing is used in insecticidal acaricidal synergistic composition and its application.

Cyetpyrafen is manufactured through a modular, multi-step synthesis designed to efficiently assemble its characteristic pyrazole-carboxamide scaffold and heavily substituted aromatic system while controlling stereochemistry and halogenated impurities. Industrial routes typically begin with construction of the pyrazole core from a beta dicarbonyl precursor and hydrazine derivative, followed by selective chlorination and introduction of the trifluoromethyl-substituted phenyl ring through either nucleophilic aromatic substitution or metal-catalysed coupling, depending on the producer’s proprietary route. In parallel, the secondary amine fragment is prepared and activated for amide formation. The key step is the coupling of the pyrazole-carboxylic acid (or its acid chloride/mixed anhydride) with the amine under dehydrating conditions that minimise side reactions from the electron-rich heterocycle.

Absorbed by plant roots. Inhibits mitochondrial electrontransport chain complex II

Acaricide; Insecticide