6-氟-4-氧代-4氢-1-苯并吡喃-2-羧酸

6-Fluoro-4-oxo-4H-chromene-2-carboxylic acid 6-fluoro-4-oxo-1-benzopyran-2-carboxylic acid 6-fluoro-4-oxo-4h-1-benzopyran-2-carboxylic acid 6-fluoro-4-oxo-4h-1-benzopyran-2-carboxylic acid: 6-fluorochromone-2-carboxylic acid 6-fluoro-4-oxo-4h-chromene-2-carboxylic acid 98% 6-fluoro-4-oxo-4h-chromene-2-carboxylicacid98% 6-fluorochromone-2-carboxylic acid 6-fluorochromone-2-carboxylicacid/6-fluoro-4-oxo-4h-chromone-2-carboxylicacid 99199-59-4