N-[2-(Indol-3-yl-2,4,5,6,7-d5)acetyl]-L-glutamic-15N Acid is an isotopic analog of Indole-3-acetyl-L-glutamic Acid (I577375), an indole-3-acetyl-amino acid conjugate involved in regulatory mechanisms for the control of auxin activity during physiological and pathophysiological responses.