2-Hydroxy-5-((4-carboxyphenyl)azo)benzoesaeure [German] 2-Hydroxy-5-((4-carboxyphenyl)azo)benzoic acid 5-((4-Carboxyphenyl)azo)-2-hydroxybenzoic acid 64896-26-0 BRN 3153738 Benzalazine Benzoic acid, 5-((4-carboxyphenyl)azo)-2-hydroxy- CCRIS 7270 Salicylazobenzoesaeure [German] Salicylazobenzoic acid