754892 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 5.7216 -3.6329 0.0000 Ra 0 0 0 0 0 15 0 0 0 0 0 0 M ISO 1 1 220 M END > 0 > 0 > 754892 > 3 > ChemIDplus > 015756715 > 15756-71-5 220Ra Radium, isotope of mass 220 Radium-220 > 15756-71-5 > 015756715 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=015756715 > 6337593 1 $$$$