97-87-0 AI3-24261 BUTYLISOBUTYRATE Butyl 2-methylpropanoate Butyl isobutanoate Butyl isobutyrate Butyl isobutyrate (natural) EINECS 202-614-6 FEMA No. 2188 Isobutyric acid, butyl ester Isobutyric acid, butyl ester (6CI,7CI,8CI) Propanoic acid, 2-methyl-, butyl ester