熔点：157.2-158.9 ^oC。¹H NMR (400 MHz, CDCl₃) δ 9.49 (s, 1H), 8.16 (d, J = 8.3 Hz, 1H), 7.68 (t, J = 7.1 Hz, 1H), 7.55 (s, 3H), 7.49 – 7.40 (m, 3H), 7.29 (d, J = 6.0 Hz, 2H), 6.25 (s, 1H), 5.44 (s, 1H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 150.4, 148.5, 146.6, 142.8, 142.3, 136.9, 129.2, 129.1, 129.1, 128.4, 127.6, 126.9, 126.4, 122.3, 111.6, 110.8. HRMS (EI) m/z: calcd for C₁₉H₁₃NO, 271.0997; found, 271.0996.