5-硝基水杨酸

2-carboxy-4-nitrotriphenylamine

[4,6-dihydroxy-2-(4-nitrobenzyl)pyrimidin-5-yl]acetic acid methyl ester

5-氨基-2-氯苯甲酸

2-氟-5-硝基苯甲酸甲酯