3772828 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3772828 > 2 > ChemIDplus > 083221630 > 2,7-Naphthalenedisulfonic acid, 4-amino-3-((4'-((2,4-diaminophenyl)azo)-2,2'-disulfo(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)-, sodium salt 4-Amino-3-((4'-((2,4-diaminophenyl)azo)-2,2'-disulpho(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonic acid, sodium salt 83221-63-0 EINECS 280-241-8 > 83221-63-0 > 083221630 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=083221630 $$$$