682544 -OEChem-02060822462D 1 0 0 0 0 0 0 0 0999 V2000 0.7917 -0.5708 0.0000 Ac 1 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 228 M END > 0 > 0 > 682544 > 3 > ChemIDplus > 014331830 > 14331-83-0 Actinium, isotope of mass 228 Actinium-228 > 14331-83-0 > 014331830 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=014331830 > 105063 1 $$$$