3738699 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3738699 > 2 > ChemIDplus > 034204905 > 34204-90-5 Calcium (1-hydroxyethylidene)diphosphonate (1:2) Phosphonic acid, (1-hydroxyethylidene)di-, calcium salt (1:2) > 34204-90-5 > 034204905 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=034204905 $$$$