D,L-Arginine-d3

D,L-Arginine-2,3,3-d3 hydrochloride is a stable isotope-labeled derivative of an amino acid L-arginine. D,L-Arginine-d3 is intended for use as an internal standard for the quantification of L-arginine by Tandem mass spectrometry (MS-MS) combined with UPLC, HPLC or GC.