L-Tryptophan is the only amino acid in animals that binds to blood albumin through non covalent bonds.
CAS No. :
73-22-3EINECS :
200-795-6Package :
25KG/DRUMBrand :
TOPINCHEM®Origin :
CHINAFormula :
C11H12N2O2Minimum Order :
200KGItem :
L-TryptophanManufacturer Supply L-Tryptophan USP Grade CAS 73-22-3
Description
L-tryptophan is one of the essential amino acids in human and animal life activities, playing an important role in the growth, development, and metabolism of humans and animals, and is known as the second essential amino acid.
Specification
| Items | Limits | Test results | Test Method |
| Description | White to yellowwish White crystals or crystalline powder | Conforms | Visual |
| Identification（IR） | Concordant with the reference spectrum | Conforms | Infrared absorption |
| Assay（Titration) | 98.5～101.5% | 99.80% | Titration |
| Assay（HPLC) | ≥93.0% | 95.40% | HPLC |
| Specific rotation | -29.4 °~-32.8 ° | -31.0 ° | USP |
| Residue on ignition | ≤0.10% | 0.04% | USP |
| PH | 5.5-7.0 | 6. 12 | USP |
| Loss on drying | ≤0.30% | 0.02% | USP |
| Bulk density | / | 0.28g/ml | In-house method |
| Tapped density | / | 0.49g/ml | In-house method |
| Lead(Pb) | ≤3ppm | ≤3ppm | USP |
| Arsenic(As) | ≤1ppm | ≤1ppm | USP |
| Mercury(Hg) | ≤0. 1ppm | ≤0. 1ppm | USP |
| Cadmium | ≤1ppm | ≤1ppm | USP |
| Chloride | ≤0.05% | ＜0.05% | USP |
| Sulfate | ≤0.03% | ＜0.03% | USP |
| Iron（Fe） | ≤30ppm | ＜30ppm | USP |
| Heavy metals | ≤15ppm | ＜15ppm | USP |
| Total Plate Count | ≤2000cfu/g | ＜2000cfu/g | USP |
| Yeast and Molds | ≤100cfu/g | ＜100cfu/g | USP |
| E.Coli | Negative in 10g | Conforms | USP |
| Salmonella | Negative in 10g | Conforms | USP |
| Organic volatile impurities | Meet the requirements | Conforms | USP |
Application
L-tryptophan is used in biochemical research and as a sedative, amino acid drug, and nutritional supplement in medicine.
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