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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.
| Name | L-tryptophan |
| Appearance | White crystal or crystalline powder |
| CAS NO. | 73-22-3 |
| EINECS NO. | 200-795-6 |
| Molecular weight | 204.2252 |
| Melting point | 280-285ºC |
| Boiling point | 447.9°C at 760 mmHg |
| Density | 8.3E-09mmHg at 25°C |
| Flash point | 224.7°C |
Function:
1.Helps support healthy circulatory systems
2.Improves cardiovascular health
3.Lowers cholesterol levels
4.Reduces hypertension
5.Relievesdepression and symptoms of other mental health problems
6.May haveeffects in cancer prevention.
Application:
1.It's a kind of nutritional supplement.
2.It can improve the aerobic metabolism of the muscle and greatly enhance muscle strength and
endurance from diet alone.
3.It can be used as nutrition enhancer.
4.It's one of the most popular and effective nutritional supplements as well as the indispensable
product for bodybuilders.
5.It is also widely used by other athletes, such as football players, basketball players and so on. 
Test | Specifications | Result |
Assay by HPLC: | 99.0%-100.5% | 99.4% |
Appearance: | White crystalline powder | Complies |
Specific rotation: | -29.4°~-32.8° | -31.5° |
PH | 5.5 ~ 7.0 | 6.3 |
Loss on drying %: | ≤0.3 % | 0.13% |
Heavy metals PPM: | ≤15ppm | Complies |
Residue on ignition | ≤0.1 % | 0.06% |
Chloride% | ≤0.05% | Complies |
Iron | ≤0.003% | Complies |
Microbiology: Total Plate Count: Yeast & Mold: E.Coli: S. Aureus: Salmonella: |
<1000cfu/g <100cfu/g Negative Negative Negative |
Complies Negative Complies Complies Complies |
Conclusion: | Conform with specification | |
