1,3,5-Naphthalenetrisulfonic acid, 7,7'-(carbonylbis(imino(1-methyl-1H-pyrrole-4,2-diyl)carbonylimino(1-methyl-1H-pyrrole-4,2-diyl)carbonylimino))bis-, hexasodium salt 154755-58-5 7,7'-(Carbonyl-bis-(imino-N-methyl-4,2-pyrrolcarbonylimino(N-methyl-4,2-pyrrol)carbonylimino))-bis(1,3,5-naphthalenetrisulfonic acid) Fce 27164 Fce-27164