¹H NMR (400 MHz, CDCl₃) δ 8.66 (s, 1H), 7.67 – 7.59 (m, 1H), 7.56 (s, 1H), 7.35 (d, J = 5.0 Hz, 2H); ¹³C NMR (101 MHz, CDCl₃) δ 160.2 (s), 132.7 (s), 131.9 (s), 130.4 (s), 127.7 (s), 126.4 (s), 122.9 (s), 115.7 (s). HRMS (EI): calculated for C₉H₅N₂O₃Br: 267.9484; found: 267.9486.