... 3Molecular Formula:C11h12n2o2Molecular Structure: Physico-chemical properties:White PowderPicture: L-tryptophan is an amino acid, a protein building block ... contains 300 mg of tryptophan and chicken and turkey contain up to 600 mg per pound. L-tryptophan is in plant ... by colamine oxidation take off ammonia acid indoles formation. L-tryptophan is used for insomnia, sleep apnea, depression, anxiety, ...