D-Ornithine (hydrochloride) (Standard) is the analytical standard of D-Ornithine (hydrochloride). This product is intended for research and analytical applications. D-Ornithine ((R)-Ornithine) hydrochloride is a constituent of bacterial cell wall. D-Ornithine hydrochloride promotes the production of L-arginine (HY-N0455). D-Ornithine hydrochloride enhances the expression of pyrrolysine-containing proteins[1][2][3].