1,2-Benzenedicarboxylic acid, mono(2-methylpropyl) ester (9CI) 3-09-00-04104 (Beilstein Handbook Reference) 30833-53-5 BRN 3280781 EINECS 250-352-6 Isobutyl hydrogen phthalate MIBP Mono-iso-butyl phthalate Monoisobutyl phthalate Phthalic acid, monoisobutyl ester