EINECS 266-338-8, 1-Naphthalenediazonium,4-(phenylazo)-7-sulfo-,hydroxide,inner salt, 4-(Phenylazo)-7-sulphonatonaphthalene-1-diazonium, 1-Naphthalenediazonium,4-(phenylazo)-7-sulfo-,inner salt, 1-Naphthalenediazonium,4-(2-phenyldiazenyl)-7-sulfo-,inner salt,