Liquid Chromatographic Investigation of Spontaneous Oscillatory In Vitro Chiral Conversion and Spontaneous Oscillatory Condensation of Simple Carboxylic Acids in Aqueous and Nonaqueous Media
Figure 6
Test tubes showing the color outcome of the biuret test on 70% ethanol solutions of (a) R-phenylglycine, (b) S-phenylglycine, and (c) racemic RS-phenylglycine after storage for three days (originally published in [5]).
