Sigma Aldrich (1)
TCI Chemicals (1)
L-tryptophan (153-94-6, 73-22-3)
Tryptophan · Optimax · L Tryptophan
Tryptophan (abbreviated as Trp or W; encoded by the codon UGG) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group, an α-carboxylic acid group, and a side chain indole, making it a non-polar aromatic amino acid. It is essential in humans, meaning the body cannot synthesize it: it must be obtained from the diet.