Preparation
5-Amino-2-(4-aminophenylamino)benzenesulfonic acid double nitriding, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? ?(2 Moore) coupled, its product to double nitriding, and 4-Methylbenzene-1,3-diamine and Benzene-1,3-diamine coupling.
