200768 -OEChem-02060822402D 0 0 0 0 0 0 0 0 0999 V2000 M END > 200768 > 3 > ChemIDplus > B06600000 > B06600000 > B06600000 Butenes > B06600000 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=B06600000 $$$$