diethyl 2-(thiophen-3-ylmethyl)propanedioate

1-(4-methylphenyl)-2-sulfanylidene-1,3-diazinane-4,6-dione

4-羟基-1,8-萘啶-2(1h)-酮

2-羟基-4H-吡啶并[1,2-a]嘧啶-4-酮

5-氯-1,2-二氢-4-羟基-1-甲基-2-氧代-3-喹啉羧酸乙酯