2-oxo-6-phenyl-2H-pyran-4-carboxylic acid

1,1-dichloro-5-phenyl-pent-1-en-4-yn-3-ol

5-oxo-5-phenyl-pent-2ξ-enoic acid

2-oxo-6-phenyl-2H-pyran-3,5-dicarboxylic acid diethyl ester

5-氧代-5-苯基戊腈