乙基(3S)-3-羟基-4-甲基戊酸酯

ethyl (3R)-3-hydroxy-4-methylpentanoate

1-(4-chlorophenyl)-1-hydroxy-3-methylbutan-2-one

1,2-双(4-氯苯基)-2-羟基乙酮

1-(4-chlorophenyl)-2-hydroxy-3-methyl-1-butanone