2-Methyl-2-phenoxypropionic acid 2-Phenoxyisobutyric acid 4-06-00-00646 (Beilstein Handbook Reference) 943-45-3 Acide methyl-2 phenoxy-2 propionique [French] BRN 1947985 EINECS 213-402-8 NSC 34010 Phenoxyisobutyric acid Propionic acid, 2-methyl-2-phenoxy-