7-硝基-苯并[k]苯并[a]蒽

1,2,3-三甲氧基-5-硝基苯

2,6-二溴-3,4,5-三甲氧基-苯甲酸

3-bromo-2-methyl-5-propan-2-ylcyclohexa-2,5-diene-1,4-dione

2-(3-methyl-5-oxo-2H-furan-2-yl)acetic acid