754880 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 5.8924 -3.6037 0.0000 Ra 1 0 0 0 0 15 0 0 0 0 0 0 M ISO 1 1 227 M END > 0 > 0 > 754880 > 3 > ChemIDplus > 015743847 > 15743-84-7 227Ra Radium isotope of mass 227 Radium-227 > 15743-84-7 > 015743847 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=015743847 > 6337591 1 $$$$