166473 -OEChem-02060822392D 1 0 0 0 0 0 0 0 0999 V2000 0.0000 0.0000 0.0000 Pa 0 0 0 0 0 0 0 0 0 0 0 0 M END > 0 > 0 > 166473 > 3 > ChemIDplus > 007440133 > 7440-13-3 PROTACTINIUM > 7440-13-3 > 007440133 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=007440133 > 23945 1 $$$$