N-甲基蒽

3-Diazo-1-methyl-1H-quinoline-2,4-dione

ethyl 2-ethoxy-4-oxofuran-3-carboxylate

2-苯胺-4-氧代-4,5-二氢-3-呋喃羧酸乙酯

9-methylfuro[2,3-b]quinoline-3,4(2H,9H)-dione