3758306 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3758306 > 2 > ChemIDplus > 068606291 > 68606-29-1 68606-30-4 EINECS 271-739-6 Hydrocarbons, C4 and C8, butene concentrator by-product Isobutylene polymer, by-product > 68606-29-1 68606-30-4 > 068606291 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=068606291 $$$$