754838 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 5.5633 -3.6454 0.0000 Tm -3 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 166 M END > 0 > 0 > 754838 > 3 > ChemIDplus > 015690752 > 15690-75-2 166Tm Thulium, isotope of mass 166 Thulium-166 > 15690-75-2 > 015690752 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=015690752 > 177618 1 $$$$