6-Methyl-4H-furo[3,2-b]indole-2-carboxylic acid

糠酸

5-(4-甲基-2-硝基苯基)-2-糠酸

5-(4-Methyl-2-nitro-phenyl)-furan-2-carboxylic acid ethyl ester

4-甲基-2-硝基苯胺