Cyromazine

READ MORE FROM 

Cyromazine is a triazine insect growth regulator used as an insecticide and an acaricide. It is a cyclopropyl derivative of melamine. Cyromazine works by affecting the nervous system of the immature larval stages of certain insects. In veterinary medicine, cyromazine is used as an ectoparasiticide.

READ MORE FROM https://en.wikipedia.org/wiki/Cyromazine