methoprene

[ meth-uh-preen ]
/ ˈmɛθ əˌprin /

noun Chemistry.

a synthetic insect juvenile hormone, C19H34O3, used as a biological pesticide primarily on mosquito and fly larvae to prevent maturing to the adult state.

Origin of methoprene

1970–75; probably metho(xy-) + pr(opyl) + -ene