5-hydroxy-4,7-dimethylchromen-2-one

[1,3]二氧杂环戊并[4,5-g]喹啉-6-醇

4,7-二氧代-7-苯基庚酸

2-[4-(2-chloroacetyl)phenyl]acetic acid

1,3-bis(4-bromophenyl)urea