2-Ethyl-2-hydroxybutyric acid 2-phenylhydrazide 3166-50-5 4-15-00-00194 (Beilstein Handbook Reference) BRN 1819477 BUTYRIC ACID, 2-ETHYL-2-HYDROXY-, 2-PHENYLHYDRAZIDE Butanoic acid, 2-ethyl-2-hydroxy-, 2-phenylhydrazine (9CI) Glycolic acid, diethyl-, phenylhydrazide Phenylhydrazide of diethylglycolic acid