682630 -OEChem-02060822462D 1 0 0 0 0 0 0 0 0999 V2000 0.8167 -3.7667 0.0000 Cu 1 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 64 M END > 0 > 0 > 682630 > 3 > ChemIDplus > 013981254 > 13981-25-4 Copper, isotope of mass 64 Copper-64 > 13981-25-4 > 013981254 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=013981254 > 105141 1 $$$$