.beta.-Naphthylamine-5,7-disulfonic acid 1,3-Naphthalenedisulfonic acid, 6-amino- 118-33-2 2-Amino-5,7-naphthalenedisulfonic acid 2-Aminonaphthalene-5,7-disulfonic acid 2-Naftylamin-5,7-disulfonan sodny 2-Naphthylamine, 5,7-disulfo- 2-Naphthylamine-5,7-disulfonic acid 6-Amino-1,3-naphthalenedisulfonic acid Amino-I acid Amino-J acid Amino-J-acid Kyselina amino-i NSC4157 Naphthalene-1,3-disulfonic acid, 6-amino- WLN: L66J BSWQ DSWQ HZ &-NA-