301193-69-1

2-(4-METHOXYPHENYL)-4-OXO-4H-CHROMEN-3-YL 2,5-DIMETHOXYBENZENESULFONATE 2-(4-methoxyphenyl)-4-oxo-4H-chromen-3-yl 2,5-dimethoxybenzene-1-sulfonate Benzenesulfonic acid, 2,5-dimethoxy-, 2-(4-methoxyphenyl)-4-oxo-4H-1-benzopyran-3-yl ester