Naphthionic acid84-86-6100 % similar Laurent acid84-89-980 % similar 2-Amino-1,5-naphthalenedisulfonic acid117-62-466 % similar S Acid83-64-762 % similar Armstrong'S acid81-04-962 % similar 2-Amino-1-naphthol-4-sulfonic acid567-13-561 % similar 1-Naphthol-4-sulfonic acid84-87-761 % similar 1,5-Naphthalenedisulfonic acid, hydrate (1:4)211366-30-256 % similar Sodium naphthionate130-13-256 % similar Tobias acid81-16-356 % similar Naphthalene-1-sulfonic acid85-47-255 % similar 2-Naphthylamine-4,8-disulfonic acid131-27-154 % similar 1-Amino-2-naphthol-4-sulfonic acid116-63-253 % similar L Acid117-59-951 % similar Aniline-2,4-disulfonic acid137-51-951 % similar 2,5-Diaminobenzenesulfonic acid88-45-951 % similar 2,4-Diaminobenzenesulfonic acid88-63-151 % similar 2-Amino-1,4-benzenedisulfonic acid98-44-251 % similar 4-Amino-5-hydroxy-1,7-naphthalenedisulfonic acid130-23-451 % similar 4,6-Diamino-1,3-benzenedisulfonic acid137-50-850 % similar