3751921 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3751921 > 2 > ChemIDplus > 067880664 > 67880-66-4 Polymyxin F1 > 67880-66-4 > 067880664 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=067880664 $$$$