2-Naphthalenecarboxylicacid, 1-hydroxy-4-[(4-methoxyphenyl)azo]- (9CI); 2-Naphthoic acid,1-hydroxy-4-[(p-methoxyphenyl)azo]- (7CI,8CI);1-Hydroxy-4-(p-methoxyphenylazo)-2-naphthoic acid
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