3763760 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3763760 > 2 > ChemIDplus > 070815213 > 2,7-Naphthalenedisulfonic acid, 4-amino-3-((2,5-disulfophenyl)azo)-5-hydroxy-6-((3-phosphonophenyl)azo)-, tetraammonium monosodium salt 4-Amino-5-hydroxy-6-((3-phosphonophenyl)azo)-3-((2,5-disulfophenyl)azo)-2,7-naphthalenedisulfonic acid, monosodium tetraammonium salt 70815-21-3 > 70815-21-3 > 070815213 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=070815213 $$$$