744811 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 5.2396 -0.2471 0.0000 Bk 0 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 247 M END > 0 > 0 > 744811 > 3 > ChemIDplus > 015752382 > 15752-38-2 247Bk Berkelium, isotope of mass 247 Berkelium-247 > 15752-38-2 > 015752382 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=015752382 > 167368 1 $$$$