754698 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 5.7208 -3.6292 0.0000 Er 2 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 168 M END > 0 > 0 > 754698 > 3 > ChemIDplus > 014833433 > 14833-43-3 168Er Erbium, isotope of mass 168 Erbium-168 > 14833-43-3 > 014833433 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=014833433 > 177481 1 $$$$