Fig. 7From: Screening for cytotoxic chemical constituents from Justicia procumbens by HPLC–DAD–ESI–MS and NMRNMR spectra of compound 12: a chemical structure, b 1H-NMR spectrum, c 13C-NMR spectrum, d HMBC spectrum, e HSQC spectrum, f 1H-1H COSY spectrumBack to article page