99%+ Purity L-Tryptophan CAS :73-22-3

Product Summary:


L-tryptophan is an amino acid, a protein building block that can be found in many plant and animal proteins. L-tryptophan is called an "essential" amino acid because the body can't make it. It must be acquired from food.

Amino acid is the general name of a class of organic compounds containing amino and carboxyl. The amino acid which attached to the α- amino group on the α- carbon is α- amino acid. All the amino acids composing the protein are α- amino acids. Amino acid is a basic unit of biological function protein macromolecules and basic substance of composing proteins required by animal nutrition.



99%+ Purity L-Tryptophan CAS :73-22-3

L-Tryptophan Details:

Product Name:L-Tryptophan
Synonym:H-Trp-OH; L-Tryptophane; L-Tryptohan; TRP; (S)-2-Amino-3-(3-indolyl)propionic acid; 2-Amino-3-(1H-indol-3-yl)propanoic acid; Tryptophan; (S)-2-Amino-3-(1H-indol-3-yl)propanoic acid; L-alphs-Amino-3-indolepropionic acid; Indole-3-alanine
Cas No: 73-22-3
CAS No.: 73-22-3; 80206-30-0
EINECS number: 200-795-6
Molecular formula: C11H12N2O2
Molecular weight: 204.2252
Appearance: White Powder
Efficacy: Promote Healthy & Growth
Package:Foil bage,drum


L-Tryptophan Specification:


AppearanceWhite to Yellowish White Crystals Crystalline Powder
IdentificationInfrared Absorption
Specific Rotation-29.4°~-32.8°
Loss on Drying≤ 0.30%
Residue on Ignition≤ 0.10%
Chloride(Cl)≤ 0.05%
Sulfate(SO4)≤ 0.03%
Iron(Fe)≤ 0.003%
Heavy Mental(Pb)≤ 0.0015%
ganic Volatile ImpuritiesMeets the Requirements


L-Tryptophan Description:

L-tryptophan is an essential amino acid, which means it is not synthesized by the human body and must be acquired through the diet. The male adult’s requirement is 3.5 mg per kg of body weight. L-tryptophan is one of the least abundant essential amino acids; however, it is one of the most crucial, particularly in the production of niacin and serotonin. Sources of L-tryptophan include dairy products, beef, poultry, barley, brown rice, fish, soybeans and peanuts.L-tryptophan is a natural sedative. In the brain it is converted into serotonin, which is then converted into melatonin, which plays a key role in balancing sleep and mood patterns. L-tryptophan is used as an active ingredient in antidepressant therapy. Other uses of L-tryptophan include weight loss and reduction of PMS.

Amino acid givs a specific molecular structure and morphology to protein, making which molecule having the biological activity. Protein is important active molecules in Organism, including enzyme catalyzed metabolism.
Amino acids is the most basic substance constituting proteins of the organism which related to life activities, it has close relation with life and biological activity. It has special physiological functions in antibody, and it is a kind of indispensable nutrients in living body. Generation existence and extinction of life are all related to protein, once lost , life would be gone . The basic unit of the protein are amino acids, so if the body lacks any kind of essential amino acids, it will lead to physiological dysfunction, affects the body's normal metabolism and leads to disease in final.


L-Tryptophan Application:

Tryptophan is an essential amino acid which is the precursor of serotonin. Serotonin is a brain neurotransmitter, platelet clotting factor and neurohormone found in organs throughout the body. Metabolism of tryptophan to serotonin requires nutrients such as vitamin B6, niacin and glutathione. Niacin is an important metabolite of tryptophan. High corn or other tryptophan-deficient diets can cause pellagra, which is a niacin-tryptophan deficiency disease with symptoms of dermatitis, diarrhea and dementia. Inborn errors of tryptophan metabolism exist where a tumor (carcinoid) makes excess serotonin. Hartnup's disease is a disease where tryptophan and other amino acids are not absorbed properly. Tryptophan supplements may be useful in each condition, in carcinoid replacing the over-metabolized nutrient and in Hartnup's supplementing a malabsorbed nutrient. Some disorders of excess tryptophan in the blood may contribute to mental retardation. Assessment of tryptophan deficiency is done through studying excretion of tryptophan metabolites in the urine or blood. Blood may be the most sensitive test because the amino acid tryptophan is transported in a unique way. Increased urination of tryptophan fragments correlates with increased tryptophan degradation, which occurs with oral contraception, depression, mental retardation, hypertension and anxiety states. The requirement for tryptophan and protein decreases with age. Adults' minimum daily requirement is 3 mg/kg/day or about 200 mg a day. This may be an underestimation, for there are 400 mg of tryptophan in just a cup of wheat germ. A cup of low fat cottage cheese contains 300 mg of tryptophan and chicken and turkey contain up to 600 mg per pound.

L-tryptophan is in plant auxin biosynthesis important precurssubstances, the structure the IAA similar, in higher plant are common. Can through the tryptophan auxin, there are two synthetic ways: (1) tryptophan first oxidation take off ammonia indoles acetone, to form the decarboxylation form indole acetaldehyde; Acetaldehyde in the corresponding of indoles enzyme catalytic oxidation as final indoles acetic acid. (2) tryptophan decarboxylation, which formed first, then by colamine oxidation take off ammonia acid indoles formation.

L-tryptophan is used for insomnia, sleep apnea, depression, anxiety, facial pain, a severe form of premenstrual syndrome called premenstrual dysphoric disorder (PMDD), smoking cessation, grinding teeth during sleep (bruxism), attention deficit-hyperactivity disorder (ADHD), Tourette's syndrome, and to improve athletic performance.

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