(2-Methylpropyl)benzene 1-Phenyl-2-methylpropane 2-Methyl-1-phenylpropane 2-Phenyl-2-methylpropane 4-05-00-01042 (Beilstein Handbook Reference) 538-93-2 BRN 1852218 Benzene, (2-methylpropyl)- Benzene, isobutyl- EINECS 208-706-2 ISOBUTYLBENZENE NSC 24848