738608 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 -3.2792 0.3042 0.0000 Pr 2 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 143 M END > 0 > 0 > 738608 > 3 > ChemIDplus > 014981794 > 143Pr 14981-79-4 Praseodymium, isotope of mass 143 Praseodymium-143 > 14981-79-4 > 014981794 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=014981794 > 161103 1 $$$$