Synonyms: disodium [disulphamoyl-29H,31H-phthalocyaninedisulphonato(4-)-N29,N30,N31,N32]cuprate(2-);Cuprate(2-), C,C-bis(aminosulfonyl)-29H,31H-phthalocyanine-C,C-disulfonato(4-)-.kappa.N29,.kappa.N30,.kappa.N31,.kappa.N32-, disodium;Cuprate, [C,C-bis(aminosulfonyl)-29H,31H-phthalocyanine-C,C-disulfonato-N29,N30,N31,N32]-, disodium;Cuprate(2-), [C,C-bis(aminosulfonyl)-29H, 31H-phthalocyanine-C,C-disulfonato(4-)-N29 ,N30,N31,N32]-, disodium