2-Hydroxy[(2-hydroxy-4-sulpho-1-naphthalene)azo]naphthalene-3-carboxylicacid;2-naphthalenecarboxylicacid,3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)az;2-Naphthalenecarboxylicacid,3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)azo]-;3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)azo]-2-Naphthalenecarboxylicacid;PATTON AND REEDER INDICATOR;PATTON AND REEDERS INDICATOR;PATTON AND REEDERS REAGENT;PATTON AND REEDERS REAGENT