6837-67-8

C.I.44535 Mordant Blue 28 C.I.Mordant Blue 28 Naphthochrome Azurine B C.I.Mordant Blue 28:C.I.44535 4-[Bis[4-hydroxy-3-(sodiooxycarbonyl)-1-naphthalenyl]methylene]-1,4-dihydro-1-oxonaphthalene-2-carboxylic acid sodium salt