2-Indolinethione

2-Indolinethione is an organic compound with the formula C8H6(S)(NH). It is a derivative of dihydroindole containing a thione group. The compound is a tautomer of 2-mercaptoindole. A white solid, it is prepared by thiation of 2-oxindole. 2-Indolinethione is a precursor to several natural products.