p-[(2-hydroxy-1-naphthyl)azo]benzenesulphonic acid, compound with methylamine (1:1);Benzenesulfonic acid, 4-(2-hydroxy-1-naphthalenyl)azo-, compd. with methanamine (1:1);Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-, compd. with methanamine;Einecs 285-151-2
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