3767390 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3767390 > 2 > ChemIDplus > 072927743 > 2,7-Naphthalenedisulfonic acid, 4-amino-3,6-bis((4-((2,4-diamino-5-sulfophenyl)azo)phenyl)azo)-5-hydroxy-, tetrasodium salt 4-Amino-3,6-bis((4-((2,4-diamino-5-sulfophenyl)azo)phenyl)azo)-5-hydroxy-2,7-naphthalenedisulfonic acid tetrasodium salt 72927-74-3 > 72927-74-3 > 072927743 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=072927743 $$$$