Benzenesulfonicacid, 4-[(3-chloro-4-hydroxyphenyl)azo]-, monosodium salt (9CI);Benzenesulfonic acid, p-[(3-chloro-4-hydroxyphenyl)azo]-, monosodium salt(8CI); Benzenesulfonic acid, p-[(3-chloro-4-hydroxyphenyl)azo]-, sodium salt(7CI)
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