744813 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 5.2396 -0.2471 0.0000 I 0 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 121 M END > 0 > 0 > 744813 > 3 > ChemIDplus > 015755176 > 121I 15755-17-6 Iodine, isotope of mass 121 Iodine-121 > 15755-17-6 > 015755176 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=015755176 > 167370 1 $$$$