Evaluation of compounds for insecticidal activity on adult mosquitos. 3. Properties of some N-methylthiolcarbamates.

N-methylcarbamates derived from thiophenols possess negligible insecticidal activity against the mosquitos Anopheles stephensi and Aedes aegypti. The probable basic reason for the inactivity is that these compounds are much less efficient inhibitors of cholinesterase than the oxygen analogues.