Synonyms: Copper(4+),[[1,1',1'',1'''-[(29H,31H-phthalocyanine-C,C,C,C-tetrayl-kN29,kN30,kN31,kN32)tetrakis(methylene)]tetrakis[pyridiniumato]](2-)]-,tetrachloride (9CI);Copper(4+),[[1,1',1'',1'''-[29H,31H-phthalocyanine-C,C,C,C-tetrayltetrakis(methylene)]tetrakis[pyridiniumato]](2-)-N29,N30,N31,N32]-,tetrachloride;Pyridinium,1,1',1'',1'''-[29H,31H-phthalocyanine-C,C,C,C-tetrayltetrakis(methylene)]tetrakis-,copper complex;Alcian Blue tetrakis;Alcian Blue tetrakis(methylpyridinium)chloride;