对氰基苯甲酸

(6E)-3-methyl-6-(3-oxobutan-2-ylidene)cyclohexa-2,4-dien-1-one

2,3-dihydro-2,3,6-trimethyl-2,3-epoxybenzofuran

1-(甲磺酰基)-4-硝基苯

丙酮