Synonyms: Benzenediazoniumcompounds, p-sulfo-, hydroxide, inner salt (7CI);Benzenediazonium, 4-sulfo-,hydroxide, inner salt;Benzenediazonium, p-sulfo-, hydroxide, inner salt (8CI);p-Sulfobenzenediazonium hydroxide inner salt (6CI);4-Benzenediazoniumsulfonate;4-Diazobenzenesulfonic acid;4-Sulfobenzenediazonium hydroxide, inner salt;4-Sulfodiazobenzene;4-Sulfonatobenzenediazonium;Diazotized sulfanilic acid;Named reagents and solutions, Pauly's;Pauly's reagent;Sulfanilic aciddiazonium salt;p-Diazobenzenesulfonic acid;p-Sulfophenyldiazonium;4-diazoniobenzenesulfonate;