744453 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 -2.9786 -4.0684 0.0000 Pr 1 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 142 M END > 0 > 0 > 744453 > 3 > ChemIDplus > 014191641 > 14191-64-1 142Pr Praseodymium, isotope of mass 142 Praseodymium-142 > 14191-64-1 > 014191641 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=014191641 > 167024 1 $$$$