The chemical Gallein has a designated molecular formula of C20H12O7 and a molecular weight of 364.309 g/mol. Synonyms may include: C.I. 45445, C.I. Mordant Violet 25, AI3-63042, 4,5-Dihydroxyfluorescein, EINECS 218-272-6, Fluoran, 3',4',5',6'-tetrahydroxy-, Fluorescein, 4',5'-dihydroxy-, NSC 56445, NSC 8668, Pyrogallolphthalein (ChemID).