for the following products
(3-[Ethyl (3-methylphenyl) amino]-propanesulfonic acid sodium salt | N-Ethyl-N-(3-sulfopropyl)-3-methylaniline sodium salt | N-Ethyl-N-(3-sulfopropyl)-m-toluidine sodium salt (TOPS) | TOPS and Sodium 3-(N-ethyl-3-methylanilino)propanesulfonate
