754844 -OEChem-02060822472D 1 0 0 0 0 0 0 0 0999 V2000 5.8924 -3.6037 0.0000 Nb 0 0 0 0 0 0 0 0 0 0 0 0 M ISO 1 1 89 M END > 0 > 0 > 754844 > 3 > ChemIDplus > 015700400 > 15700-40-0 89Nb Niobium, isotope of mass 89 Niobium-89 > 15700-40-0 > 015700400 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=015700400 > 177624 1 $$$$