3734017 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3734017 > 2 > ChemIDplus > 014092912 > 14092-91-2 Potassium, isotope of mass 39 Potassium-39 > 14092-91-2 > 014092912 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=014092912 $$$$