Description General description 6-Bromo-3-formylchromone (6-Bromo-4-oxo-4H-1-benzopyran-3-carboxaldehyde) is a 3-formylchromone derivative. In vivo cytotoxic activity of 6-bromo-3-formylchromone against normal and tumor cells has been tested. Application 6-Bromo-3-formylchromone is the suitable reagent used in a study to investigate the multidrug resistance reversal by some 3- formylchromones in human colon cancer and mouse lymphoma cells transfected with the human MDR1 gene. It may be used in the preparation of chromone containing sulfonamides. 6-Bromo-3-formylchromone may be used in the preparation of 6′-bromopyranothiazine-4,7-diones. Packaging 1 g in glass bottle