Synonyms: Cuprate(1-),[29H,31H-phthalocyanine-2-sulfonato(3-)-N29,N30,N31,N32]-, sodium, (SP-4-2)-;Cuprate(1-), [29H,31H-phthalocyanine-2-sulfonato(3-)-kN29,kN30,kN31,kN32]-, sodium, (SP-4-2)- (9CI);29H,31H-Phthalocyanine-2-sulfonic acid, copper complex