Synonyms: 2,5-Cyclohexadien-1-one,2,6-dichloro-4-[(4-hydroxyphenyl)imino]-, sodium salt (9CI);Indophenol, 2,6-dichloro-, sodium salt(8CI);Sodium,[p-[(3,5-dichloro-4-oxo-2,5-cyclohexadien-1-ylidene)amino]phenoxy]- (7CI);2,6-Dichloroindophenol sodium;2,6-Dichlorophenol indophenol sodium salt;Sodium2,6-dichloroindophenol;Sodium 2,6-dichloroindophenolate;Tillmans' reagent;