1: 73 percent / sodium hydride / tetrahydrofuran / 14 h / 20 °C 2: 94 percent / potassium hydroxide / ethanol; H2O / 4 h / 0 °C 3: Nocardia diaphanozonaria cells; glycerol; peptone / beef extract; yeast extract / H2O / 48 h / 30 °C / pH 7.0 View Scheme