744624 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 5.8626 0.1531 0.0000 Bk 2 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 249 M END > 0 > 0 > 744624 > 3 > ChemIDplus > 014900255 > 14900-25-5 249Bk Berkelium, isotope of mass 249 Berkelium-249 > 14900-25-5 > 014900255 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=014900255 > 167188 1 $$$$