熔点：134.3-136.1 ^oC。¹H NMR (400 MHz, CDCl₃) δ 9.19 (s, 1H), 8.29 (s, 1H), 8.17 (d, J = 8.4 Hz, 1H), 7.90 (d, J = 8.1 Hz, 1H), 7.74 (t, J = 7.7 Hz, 1H), 7.60 (t, J = 7.5 Hz, 1H), 7.30 (d, J = 9.2 Hz, 1H), 7.24 (s, 1H), 7.05 (d, J = 8.2 Hz, 1H), 4.02 (s, 3H), 3.98 (s, 3H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 149.7, 149.6, 149.4, 146.9, 133.7, 132.7, 130.6, 129.2, 129.0, 128.1, 127.8, 127.0, 119.9, 111.8, 110.5, 56.1, 56.0. HRMS (EI) m/z: calcd for C₁₇H₁₅NO₂, 265.1103; found, 265.1101.