738659 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 -3.3526 0.6542 0.0000 Er 3 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 169 M END > 0 > 0 > 738659 > 3 > ChemIDplus > 015840138 > 15840-13-8 Erbium, isotope of mass 169 Erbium-169 > 15840-13-8 > 015840138 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=015840138 > 161153 1 $$$$