7-Bromochromone-2-carboxylic acid;7-Bromo-4-oxo-4H-1-benzopyran-2-carboxylic acid;7-BROMO-4-OXO-4H-CHROMENE-2-CARBOXYLIC ACID;7-Bromo-4-oxo-4H-1-benzopyran-2-carboxylic acid 7-Bromo-4-oxo-4H-chromene-2-carboxylic acid
室温
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