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Pyriproxyfen is a phenyl ether insect growth regulator that disrupts insect development. It belongs to a new class of insecticides that are analogs of juvenile hormone. It has systemic and translaminar activity, low toxicity, a long residual effect, is safe for crops, has low toxicity to fish, and has minimal impact on the ecological environment. At the same time, it is highly effective in controlling sanitary pests such as flies and mosquitoes. It has the ability to inhibit the pupation and emergence of mosquito and fly larvae. This agent remains effective for about one month, is convenient to use, odorless, and is considered a better pharmaceutical for mosquito and fly control.

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Trademarks (Admiral; Nemesis; Knack)


TC: colorless crystals 

321.4 g/mol

97%TC, 10.8%EC

45 - 47 ºC

dispersible, but low solubility

moderately volatile

Mainland China

<0.013 mPa (23 °C)

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4-phenoxyphenyl (RS)-2-(2-pyridyloxy)propyl ether

Application/Usage: Pyriproxyfen is effective against the eggs and juveniles of several insect orders, including Diptera, Heteroptera, Lepidoptera, and Thysanoptera. It is recommended for use on a variety of crops; for cotton, specifically, it should be applied at a rate of 50-100 grams of active ingredient per hectare. The product is also suitable for apples, grapefruits, lychees, oranges, ornamental plants, tomatoes, and others. This product has a residual effect that can last up to 35 days, although rainfall after application may reduce its duration. Adult females exposed to Pyriproxyfen will produce non-viable eggs for a period of up to 14 days. Typical applications include foliar sprays and soil treatments.


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