682658 -OEChem-02060822462D 1 0 0 0 0 0 0 0 0999 V2000 -0.6583 -3.4917 0.0000 Tl -1 4 0 0 0 0 0 0 0 0 0 0 M RAD 1 1 2 M ISO 1 1 204 M END > 0 > 0 > 682658 > 3 > ChemIDplus > 013968519 > 13968-51-9 Thallium, isotope of mass 204 Thallium-204 > 13968-51-9 > 013968519 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=013968519 > 6335516 1 $$$$