91671-93-1

2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with diazotized 2,2'-(1,2-ethenediyl)bis[5-aminobenzenesulfonic acid] and diazotized 4-nitrobenzenamine, diazotized, coupled with diazotized 4-nitrobenzenamine, m-phenylenediamine and resorcinol,