Synonyms: Cuprate(4-), (29H,31H-phthalocyanine-2,9,16,24-tetrasulfonato(6-)-kappaN29,kappaN30,kappaN31,kappaN32)-, sodium (1:4), (SP-4-2)-;Cuprate(4-), (29H,31H-phthalocyanine-2,9,16,24-tetrasulfonato(6-)-N29,N39,N31,N32)-, tetrasodium, (SP-4-2)-;Cuprate(4-), (29H,31H-phthalocyanine-2,9,16,24-tetrasulfonato(6-)-kappaN29,kappaN30,kappaN31,kappaN32)-, tetrasodium, (SP-4-2)-;Tetrasodium (29H,31H-phthalocyanine-2,9,16,24-tetrasulphonato(6-)-N29,N30,N31,N32)cuprate(4-);copper(2+) sodium phthalocyanine-29,30-diide-2,9,16,23-tetrasulfonate (1:4:1)