71889-04-8

CUPRATE(4-),[4-[[4-[[4-[2-[4-[[3-(HYDROXY-.KAPPA.O)-4-[[2-(HYDROXY-.KAPPA.O)-5-SULFOPHENYL]AZO-.KAPPA.N1]PHENYL]AZO]-2-SULFOPHENYL]VINYL]-3-SULFOPHENYL]-ONN-AZOXY]PHENYL]AZO]BENZOATO(6-)]-,TETRASODIUM