116993-46-5
→
~95%
58156-35-7
1H-Indolizin-5-one, 2,3-dihydro-7-hydroxy
72130-68-8
7-羟基-5-氧代-1,2,3,5-四氢氮茚-8-甲酸乙酯
37704-45-3
7-羟基-5-氧代-1,2,3,5-四氢吲哚嗪-8-羧酸甲酯