China High Quality Gamma Undecalactone Manufacturers - L-Tryptophan | 73-22-3 – COLORKEM
China High Quality Gamma Undecalactone Manufacturers - 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:
Related Product Guide:
We always get the job done being a tangible workforce making sure that we can easily give you the very best quality as well as finest selling price for China High Quality Gamma Undecalactone Manufacturers - L-Tryptophan | 73-22-3 – COLORKEM , The product will supply to all over the world, such as: Slovakia, New Zealand, Hungary, We focus on providing service for our clients as a key element in strengthening our long-term relationships. Our continual availability of high grade products in combination with our excellent pre-sale and after-sales service ensures strong competitiveness in an increasingly globalized market.
By Fernando from Borussia Dortmund - 2017.06.22 12:49
It's really lucky to find such a professional and responsible manufacturer, the product quality is good and delivery is timely, very nice.
By Steven from Pretoria - 2017.06.29 18:55
