758340 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 4.6773 -5.3784 0.0000 Pr -2 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 139 M END > 0 > 0 > 758340 > 3 > ChemIDplus > 014191765 > 139Pr 14191-76-5 Praseodymium, isotope of mass 139 Praseodymium-139 > 14191-76-5 > 014191765 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=014191765 > 181086 1 $$$$