¹H NMR (400 MHz, CDCl₃) δ 9.20 (s, 1H), 8.26 (s, 1H), 8.10 (d, J = 8.4 Hz, 1H), 7.83 (d, J = 8.1 Hz, 1H), 7.69 (t, J = 7.6 Hz, 1H), 7.55 (t, J = 7.5 Hz, 1H), 7.49 (d, J = 2.6 Hz, 1H), 7.39 (d, J = 4.9 Hz, 1H), 7.16 (t, J = 3.7 Hz, 1H); ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 148.6, 147.3, 140.7, 131.3, 129.3, 128.4, 127.9, 127.8, 127.6, 127.2, 126.1, 124.4. HRMS (EI) m/z: calcd for C₁₃H₉NS, 211.0456; found, 211.0453.