(4-AMINO-2-HYDROXYPHENYL)ARSONIC ACID 4-Amino-2-(hydroxybenzene)arsonic acid 6318-57-6 Arsonic acid, (4-amino-2-hydroxyphenyl)- Benzenearsonic acid, 4-amino-2-hydroxy- NSC31664 WLN: ZR CQ D-AS-QQO p-Arsanilic acid, 2-hydroxy-