684903 -OEChem-02060822462D 1 0 0 0 0 0 0 0 0999 V2000 0.2667 -1.2458 0.0000 Pb 0 0 0 0 0 15 0 0 0 0 0 0 M ISO 1 1 203 M END > 0 > 0 > 684903 > 3 > ChemIDplus > 014687253 > 14687-25-3 203Pb Lead, isotope of mass 203 Lead-203 > 14687-25-3 > 014687253 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=014687253 > 6335610 1 $$$$