744821 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 4.0396 1.8029 0.0000 Ac -3 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 224 M END > 0 > 0 > 744821 > 3 > ChemIDplus > 015755983 > 15755-98-3 224Ac Actinium, isotope of mass 224 Actinium-224 > 15755-98-3 > 015755983 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=015755983 > 167378 1 $$$$