1H NMR (400 MHz, DMSO-d6) δ 8.47 – 8.43 (m, 1H, Ar-H), 7.77 (dd, J = 8.1, 0.7 Hz, 1H, Ar-H), 7.73 – 7.65 (m, 2H, Ar-H), 7.55 – 7.48 (m, 2H, Ar-H), 7.10 (dd, J = 8.6, 2.7 Hz, 1H, Ar-H), 5.69 (s, 2H, NH2). 13C NMR (101 MHz, DMSO) δ 179.17, 148.56, 137.64, 132.66, 129.83, 129.51, 128.38, 127.58, 126.87, 126.41, 122.49, 121.69, 111.31. FTIR (cm-1): 3430.36, 3339.29, 1600.84, 1584.48, 1457.32, 1435.73, 1343.17, 1319.80, 1162.72, 1077.75, 819.36, 733.68 GC/MS: m/z 227 [M+].