4H-1-Benzopyran-4-one, 8-((dimethylamino)methyl)-7-hydroxy-3-methyl-, hydrochloride 67195-70-4 8-(Dimethylamino)methyl-7-hydroxy-3-methylchromone hydrochloride CHROMONE, 8-(DIMETHYLAMINO)METHYL-7-HYDROXY-3-METHYL-, HYDROCHLORIDE