3727707 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3727707 > 2 > ChemIDplus > 000880682 > 880-68-2 Phosphonic acid, p-phenylenedi- p-Phenylenediphosphonic acid > 880-68-2 > 000880682 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=000880682 $$$$