.beta.-Naphthylamine-4,8-disulfonic acid .beta.-Naphthylaminedisulfonic acid 1,5-Naphthalenedisulfonic acid, 3-amino- 131-27-1 2-Amino-4,8-naphthalenedisulfonic acid 2-Naphthylamine-4,8-disulfonic acid 3-Amino-1,5-naphthalenedisulfonic acid 4,8-Disulfo-2-naphthalamine 7-Amino-1,5-naphthalenedisulfonic acid Acid IV C Acid Kyselina 2-naftylamin-4,8-disulfonova Kyselina C NSC7558 WLN: L66J BSWQ DZ GSWQ