3734333 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3734333 > 2 > ChemIDplus > 014809688 > 14809-68-8 87Kr Krypton, isotope of mass 87 Krypton-87 > 14809-68-8 > 014809688 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=014809688 $$$$