118803-65-9
(E)-4-(5-fluoro-2-hydroxyphenyl)-4-oxo-2-butenoic acid
→
118803-68-2
(2R)-6-fluoro-3,4-dihydro-4-oxo-N-((S)-1-phenylethyl)-2H-1-benzopyran-2-carboxamide
118803-70-6
(2R)-6-氟-3,4-二氢-4-氧代-2H-1-苯并吡喃-2-甲酸