熔点：103.2.-104.8 ^oC。¹H NMR (400 MHz, CDCl₃) δ 9.12 (s, 1H), 8.23 (s, 1H), 8.14 (d, J = 8.4 Hz, 1H), 7.86 (d, J = 8.0 Hz, 1H), 7.71 (t, J = 7.6 Hz, 1H), 7.57 (t, J = 7.5 Hz, 1H), 7.23 – 7.13 (m, 2H), 6.96 (d, J = 8.5 Hz, 1H), 6.04 (s, 2H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 149.6, 148.6, 147.9, 146.9, 133.6, 132.8, 131.9, 129.3, 129.0, 128.0, 127.9, 127.1, 121.2, 109.0, 107.7, 101.4. HRMS (EI) m/z: calcd for C₁₆H₁₁NO₂, 249.0790; found, 249.0788.