2-Naphthalenesulfonic acid, 7-amino-4-hydroxy- 7-Amino-4-hydroxy-2-naphthalenesulfonic acid 87-02-5 Aminonaphthol sulfonic acid J I Acid Isogamma acid J Acid Kyselina 2-amino-5-naftol-7-sulfonova Kyselina I NSC31510 WLN: L66J BQ DSWQ HZ