1H NMR (400 MHz, CDCl3): δ 8.26 (d, J = 7.9 Hz, 1H), 8.06 (s, 1H), 7.68 (t, J = 7.7 Hz, 1H), 7.44 (dd, J = 15.2, 7.9 Hz, 2H), 2.41 (s, 3H). 13C NMR (100 MHz, CDCl3): δ 175.6, 156.3, 153.9, 133.8, 126.1, 125.4, 123.1, 121.8, 118.1, 16.3. HRMS (EI): calcd for C10H8O2S: 192.0245; found, 192.0248.