1,2-Bis(3-((3-(4-ethoxyphenylaminocarbonyl)-2-hydroxynaphth-1-yl)azo)-4-methoxyphenylsulfonylamino)ethane 12216-95-4 2-Naphthalenecarboxamide, 4,4'-(1,2-ethanediylbis(iminosulfonyl(6-methoxy-3,1-phenylene)azo))bis(N-(4-ethoxyphenyl)-3-hydroxy- 4,4'-(Ethylenebis(iminosulphonyl(6-methoxy-3,1-phenylene)azo))bis(N-(4-ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide) 72659-69-9 EINECS 276-758-3