Methyl isothiocyanate is an isothiocyanate having a methyl group attached to the nitrogen. It is also the active nematicide of the pronematicide metam-sodium. It has a role as a fumigant, a nematicide and a lachrymator.
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Synthesis of the anion PET sensors 1–3, from 9-(aminomethyl)anthracene 5, and phenyl-, 4-(trifluoromethyl)phenyl-, and methyl isothiocyanates, giving 1, 2 and 3 respectively.