The following metabolite is a derivative of tryptophan
Tryptophan is conveed to Seratonin, which is then acetylated and fuher methylated to form Metatonin.Ref: DM Vasudevan - Textbook of Biochemistry, 7th edition, page no: 240, Fig no 18.10.
Melatonin
Thyroxine
Epinephrine
Nor epinephrine
Metabolism of protein and amino acid