199218 -OEChem-02060822412D 0 0 0 0 0 0 0 0 0999 V2000 M END > 199218 > 3 > ChemIDplus > 068477338 > 68477-33-8 EINECS 270-724-1 Gases (petroleum), C3-4, isobutane rich Gases, (petroleum), C3-4, isobutane-rich Gases, petroleum, C3-4, isobutane-rich Isobutane extract > 68477-33-8 > 068477338 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=068477338 $$$$