754865 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 5.7216 -3.6329 0.0000 Tm 3 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 172 M END > 0 > 0 > 754865 > 3 > ChemIDplus > 015720759 > 15720-75-9 172Tm Thulium, isotope of mass 172 Thulium-172 > 15720-75-9 > 015720759 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=015720759 > 177646 1 $$$$