2-Naphthalenecarboxamide, 4,4'-[(3,3'-dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-hydroxy-N-(2-methoxyphenyl)- 5437-88-7 C.I. 21185 C.I. Pigment Blue 26 Chromophyl Blue B-70 Dianisidine blue NSC16094