116055-73-3
9-methylfuro[2,3-b]quinoline-3,4(2H,9H)-dione
→
~74%
123907-40-4
3-hydroxy-9-methyl-2,3-dihydrofuro[2,3-b]quinolin-4(9H)-one
484-74-2
9-甲基呋喃并[2,3-B]喹啉-4(9H)-酮