Benzenesulfonicacid, 3-[(4-amino-3-methoxyphenyl)azo]-, monosodium salt (9CI);Benzenesulfonicacid, m-[(4-amino-3-methoxyphenyl)azo]-, monosodium salt (8CI);Sodium3-methoxy-4-aminoazobenzene-3'-sulfonate;
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