4,4'-Bis((8-ethoxy-1-hydroxy-3,6-disulfonaphth-2-yl)azo)-3,3'-dihydroxy-1,1'-biphenyl, complex with copper and ammonia, sodium ammonium salt 4,4'-Bis((8-ethoxy-1-hydroxy-3,6-disulfonaphthyl-2)azo)-3,3'-dihydroxy-1,1'-biphenyl, complex with copper (2:1), ammonium sodium salt 4,4'-Bis((8-ethoxy-1-hydroxy-3,6-disulfonaphthyl-2)azo)-3,3'-dihydroxy-1,1'-biphenyl, complex with copper and ammonia (2:1:1), ammonium sodium salt 72906-01-5 Cuprate(4-), (mu-((3,3'-((3,3'-dihydroxy(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(5-ethoxy-4-hydroxy-2,7-naphthalenedisulfonato))(8-)))di-, ammonium sodium