The molecule is a tetrapeptide composed of L-tryptophan, L-methione, L-aspartic acid and L-phenylalaninamide residues joined in sequence. It has a role as an anxiogenic and a human metabolite. It is a tetrapeptide and a peptidyl amide.
(3S)-3-[[(2S)-2-[[(2S)-2-amino-3-(1H-indol-3-yl)propanoyl]amino]-4-methylsulfanylbutanoyl]amino]-4-[[(2S)-1-amino-1-oxo-3-phenylpropan-2-yl]amino]-4-oxobutanoic acid