Preparation
4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidand 2,4,6-Trichloro-1,3,5-triazine condensation, again with Nicotinic acid condensation, the 2-Aminobenzenesulfonic acid diazo, and condensation product matches, and then generate a product (2 Moore) and Benzene-1,4-diamine condensation.