Before revision: 1-Aminonaphthalenesulfonic acids IsomerCAS Registry NumberAlternative namesPreparative route 1-Aminonaphthalene-4-sulfonic acid84-86-6Piria ’s acid, naphthionic acidsulfonation of 1-aminonaphthalene1-Aminonaphthalene-5-sulfonic acid84-89-9Laurent’s acid, L acid, Purpurin acidreduction of 1-nitronaphthalene-5-sulfonic acid 1-Aminonaphthalene-6-sulfonic acid119-79-91,6-Cleve’s acidsulfonation of 1-aminonaphthalene 1-Aminonaphthalene-7-sulfonic acid119-28-81,7-Cleve’s acidreduction of 1-nitroonaphthalene-8-sulfonic acid Notes: Peri-acid dehydrates to the sultam.
After revision: 1-Aminonaphthalenesulfonic acids IsomerCAS Registry NumberAlternative namesPreparative route 1-Aminonaphthalene-4-sulfonic acid 84-86-6Piria ’s acid, naphthionic acidsulfonation of 1-aminonaphthalene1-Aminonaphthalene-5-sulfonic acid84-89-9Laurent’s acid, L acid, Purpurin acidreduction of 1-nitronaphthalene-5-sulfonic acid 1-Aminonaphthalene-6-sulfonic acid119-79-91,6-Cleve’s acidsulfonation of 1-aminonaphthalene 1-Aminonaphthalene-7-sulfonic acid119-28-81,7-Cleve’s acidreduction of 1-nitroonaphthalene-8-sulfonic acid Notes: Peri-acid dehydrates to the sultam.