3808544 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3808544 > 2 > ChemIDplus > 105017821 > 1,5-Naphthalenedisulfonic acid, 3-((4-((4-((6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo)-6(or 7)-sulfo-1-naphthalenyl)azo)-1-naphthalenyl)azo)-, tetrasodium salt 105017-82-1 > 105017-82-1 > 105017821 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=105017821 $$$$