China High Quality Anisi Stellati Supplier - L-Tryptophan | 73-22-3 – COLORKEM
China High Quality Anisi Stellati Supplier - L-Tryptophan | 73-22-3 – COLORKEM Detail:
Products Description
Tryptophan (IUPAC-IUBMB abbreviation: Trp or W; IUPACabbreviation: L-Trp or D-Trp; sold for medical use as Tryptan) is one of the 22standard amino acids and an essential amino acid in the human diet, as demonstrated by its growth effects on rats. It is encoded in the standardgenetic code as the codon UGG. Only the L-stereoisomer of tryptophan is used instructural or enzyme proteins, but the R -stereoisomer is occasionally found innaturally produced peptides (for example, the marine venom peptide contryphan).The distinguishing structural characteristic of tryptophan is that it containsan indole functional group.
There isevidence that blood tryptophan levels are unlikely to be altered by changing the diet, but for some time, tryptophan has been available in health foodstores as a dietary supplement.
Clinicalresearch has shown mixed results with respect to tryptophan’s effectiveness asa sleep aid, especially in normal patients. Tryptophan has shown some effectiveness for treatment of a variety of other conditions typically associated with low serotonin levels in the brain. In particular, tryptophanhas shown some promise as an antidepressant alone and as an”augmenter” of antidepressant drugs. However, the reliability of these clinical trials has been questioned because of lack of formal controlsand repeatability. In addition, tryptophan itself may not be useful in the treatment of depression or other serotonin-dependent moods, but may be useful in understanding the chemical pathways that will give new research directions for pharmaceuticals.
Certification of Analysis
ANALYSIS | SPECIFICATION | RESULTS |
Appearance | White crystals or crystalline powder | Complies |
Odor | Characteristic | Complies |
Tasted | Characteristic | Complies |
Assay | 99% | Complies |
Sieve Analysis | 100% pass 80 mesh | Complies |
Loss on Drying | 5% Max | 1.02% |
Sulphated Ash | 5% Max | 1.3% |
Extract Solvent | Ethanol & Water | Complies |
Heavy Metal | 5ppm Max | Complies |
As | 2ppm Max | Complies |
Residual Solvents | 0.05% Max | Negative |
Microbiology | ||
Total Plate Count | 1000/g Max | Complies |
Yeast & Mold | 100/g Max | Complies |
E.Coli | Negative | Complies |
Salmonella | Negative | Complies |
Specification
ITEMS | STANDARD |
Appearance | White crystals or crystalline powder |
Assay | 98% Min |
Specific Rotation | -29.0~ -32.3 |
Loss on Drying | 0.5% Max |
Heavy Metals | 20mg/kg Max |
Arsenic(As2O3) | 2mg/kg Max |
Residue on ignition | 0.5% Max |
Package: 25 kgs/bag or as you request.
Storage: Store at a ventilated, dry place.
Standards excuted: International Standard.
Product detail pictures:
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Assume full obligation to meet all demands of our customers; accomplish ongoing advancements by promoting the advancement of our customers; become the final permanent cooperative partner of clientele and maximize the interests of shoppers for China High Quality Anisi Stellati Supplier - L-Tryptophan | 73-22-3 – COLORKEM , The product will supply to all over the world, such as: UAE, Chicago, Somalia, Our aim is to help customers realize their goals. We have been making great efforts to achieve this win-win situation and sincerely welcome you to join us. In a word, when you choose us, you choose a perfect life. Welcome to visit our factory and welcome your order! For further inquiries, you should do not hesitate to contact us.
By Amy from Israel - 2018.10.01 14:14
Customer service staff and sales man are very patience and they all good at English, product's arrival is also very timely, a good supplier.
By Elvira from Niger - 2018.12.05 13:53