(S)-2-(2-(1H-Indol-3-yl)acetamido)-3-phenylpropanoic acid-d4
(S)-2-(2-(1H-Indol-3-yl)acetamido)-3-phenylpropanoic acid-d4 is deuterium labeled (S)-2-(2-(1H-Indol-3-yl)acetamido)-3-phenylpropanoic acid. (S)-2-(2-(1H-Indol-3-yl)acetamido)-3-phenylpropanoic acid is a phenylalanine derivative.