5,5-Dimethyl-11-oxo-5H,11H-[2]benzopyrano[4,3-g][1]benzopyran-9-carboxylic acid
5,5-Dimethyl-11-oxo-5H,11H-[2]benzopyrano[4,3-g][1]benzopyran-9-carboxylic acid(5,5-Dimethyl-11-oxo-5H,11H-[2]benzopyrano[4,3-g][1]benzopyran-9-carboxylic acid)
CAS:
化学式: C19H14O5