2-Formylbenzene-1,4-diol2-FormylhydroquinoneGentisaldehyde2,5-Dihydroxybenzaldehyde 98%NSC 72387Formylhydroquinone5-Hydroxysalicylaldehyde2,5-DIHYDROXYBENZALDEHYDE2,5-Dihydroxybenzaldehyde2,5-二羟基苯甲醛龙胆醛2,5-dihydroxybenzaldehyde2,5-DihydroxybenzaldehydeGentisate aldehyde2,5-dihydroxybenzaldehydegentisaldehyde