1-Methoxy-2-methylpropane 4-01-00-01593 (Beilstein Handbook Reference) 625-44-5 BRN 1730971 Ether, isobutyl methyl Isobutyl methyl ether METHYL ISOBUTYL ETHER Methyl isobutyl oxide Propane, 1-methoxy-2-methyl- (9CI)