A Schiff base was synthesized by 3-methyl-4-amino-5-ethoxycarbonyl-methylsulfanyl-1,2,4-triazole with 3-nitrobenzaldehyde. The structure was confirmed by 1H NMR
To determine 13 flavonoids and glycyrrhizic acid in licorice(Glycyrrhiza spp.), several samples from different areas were examined by HPLC-DAD analysisT he anal