Appearance

White powder

Molecular weight

230.23 [M + H]⁺, 252.19 [M + Na]⁺

IR (KBr)

3498.09, 3193.70, 2848.56, 1605.37 1573.50, 1588.91, 1430.68, 1360.77 cm⁻¹

¹H NMR (DMSO-d6300 MHz)

δ 7.8(H-3), 7.35(H-5), 8.13(H-7), 8.3(H-3'), 7.9(H-4'), 7.4(H-5'), 8.6(H-6'), 3.93(4-OCH3), 11.69(OH)