Synonyms: Hexylresorcinol Imp. B (EP), Hymecromone Imp. A (EP),Fluorescein Sodium Imp. A (EP), Fluorescein Imp. A (EP), Resorcinol, 1,3-Dihydroxybenzene, 1,3-Benzenediol, Resorcinol (8CI), 1,3-Phenylenediol, 3-Hydroxyphenol, C.I. 76505, C.I. Developer 4, C.I. Oxidation Base 31, Developer O, Developer R, Developer RS, Durafur Developer G, Fouramine RS, Fourrine 79, Fourrine EW, NSC 1571, Nako TGG, Pelagol Grey RS, Pelagol RS, RS 11H, RS 11L, Redimix 401RAP60, Reso, Resorcin, Resorcinol 80, Rezorsine, Rodol RS, m-Benzenediol, m-Dihydroxybenzene, m-Hydroquinone, m-Hydroxyphenol, m-Phenylenediol, m-Resorcinol, Fluorescein Sodium Impurity A, Hexylresorcinol Impurity B, Hymecromone Impurity A, Fluorescein Impurity A