3819788 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3819788 > 2 > ChemIDplus > 196521821 > 196521-82-1 Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis(5-((2-hydroxy-5-methylphenyl)azo)-, tetrapotassium salt > 196521-82-1 > 196521821 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=196521821 $$$$