Crystal Structure of (R)-2-Phenoxypropionic acid-(S)-Valine

Abstract

The crystal structure of (R)-2-phenoxypropionic acid-(S)-valine has been determined. In the crystal packing, the hydrophobic and hydrophilic layers are well separated along the b-axis. The adjusted shallow pocket on the hydrophobic layers accommodates the bulky i-propyl group of (S)-valine. The amino and carboxy groups of (S)-valine are intermolecular hydrogen bonded to the carboxy groups of phenoxypropionic acid.