N,N-Diethyl-3-Toluamide
DEET, N,N-Diethyl-3-toluamide CAS 134-62-3, is the most common active ingredient in insect repellents. It is a slightly yellow oil intended to be applied to theskin or to clothing, and provides protection against mosquitoes, ticks, fleas, chiggers, leeches, and many biting insects.