¹H NMR (400 MHz, CDCl₃) δ 7.42 – 7.03 (m, 3H), 6.68 (d, J = 15.4 Hz, 0.75 ´ 1H), 6.51 (d, J = 10.6 Hz, 0.25 ´ 1H), 6.39 (d, J = 15.4 Hz, 0.75 ´ 1H), 6.17 (d, J = 10.6 Hz, 0.25 ´ 1H), 2.45 (s, 0.25 ´ 3H), 2.39 (s, 0.75 ´ 3H). ¹³C NMR (101 MHz, CDCl₃) δ 139.45, 138.18, 128.52, 127.77, 125.97, 125.41, 124.77, 124.48, 123.04, 119.60, 119.58, 119.44, 18.34, 14.80. HRMS (EI): calcd for C₇H₈S₂: 156.0067, found: 156.0066。