Pyriproxyfen is a pyridine-based pesticide which is found to be effective against a variety of arthropoda. It was introduced to the US in ***6, to protect cotton crops against whitefly. It has also been found useful for protecting other crops. It is also used as a prevention for fleas on household pets.

Pyriproxyfen is a juvenile hormone analogue, preventing larvae from developing into adulthood and thus rendering them unable to reproduce.

In the US pyriproxyfen is often marketed under the trade name Nylar. In Europe pyriproxyfen is known under the brand names Cyclio (Virbac) and Exil Flea Free TwinSpot (Emax).

Chemical ID:Identifying information, including synonyms, ID numbers, use type, chemical classification, a link to a list of all products containing this chemical and a list of the top crops this pesticide is used on in California.

Poisoning symptoms: Signs and symptoms of poisoning, first aid, and links to treatment information for this chemical.

Toxicity:Link to information on toxicity to humans, including carcinogenicity, reproductive and developmental toxicity, neurotoxicity, and acute toxicity.

Regulatory: Links to world-wide registration status as well as regulatory information for the U.S. and California.

water: Water quality standards and physical properties affecting water contamination potential.

Ecotoxicity:Toxicity to aquatic organisms.

Related chems: List of chemicals in the same family, including breakdown products, salts, esters, isomers, and other derivatives.