ISO Certificated Wholesale Amino Acid Supplements L-Tryptophan CAS 73-22-3
| Price | USD5.00 |
| Packge | 1kg |
- Min. Order:1kg
- Supply Ability:300tons
- Time:2022-07-08
Product Details
- Product NameL-Tryptophan
- CAS No.73-22-3
- EINECS No.200-795-6
- MFC11H12N2O2
- MW204.23
- InChIKeyQIVBCDIJIAJPQS-VIFPVBQESA-N
- AppearancepowderWhite to yellow-white
- Water Solubility 11.4 g/L (25 ºC)
- storage temp. 2-8°C
- density 1.34
- Melting point 289-290 °C (dec.)(lit.)
- Boiling point 342.72°C (rough estimate)
Food Grade:
| Item | FCCIV | AJI92 | USP32 |
| Appearance | White to slightly yellow crystal or crystalline powder | White to slightly yellow crystal or crystalline powder | --- |
| Assay(on dry basis) | 98.5% ~ 101.5% | 99.0% ~ 100.5% | 98.5% ~ 101.5% |
| PH Value | --- | 5.4 ~ 6.4 | 5.5 ~ 7.0 |
| Specific rotation | -30.0° ~ -33.0° | -30.0° ~ -32.5° | -29.4° ~ -32.8° |
| Transmittance | --- | ≥95.0% | --- |
| Chloride(as Cl) | --- | ≤0.02% | ≤0.05% |
| Ammonium(as NH4) | --- | ≤0.02% | --- |
| Sulfate(as SO4) | --- | ≤0.02% | ≤0.03% |
| Iron(as Fe) | --- | ≤0.002% | ≤0.003% |
| Heavy metals(as Pb) | ≤0.002% | ≤0.001% | ≤0.0015% |
| Other amino acids | --- | conform | --- |
| Loss on drying | ≤0.3% | ≤0.2% | ≤0.3% |
| Residue on ignition | ≤0.1% | ≤0.1% | ≤0.1% |
Feed Grade:
| Item | Specifications | |
| Assay | ≥98.5% | 9.0% ~ 12.0% |
| Specific Rotation | -30.0° ~ -33.0° | --- |
| Loss on drying | ≤0.5% | ≤10% |
| Residue on ignition | ≤0.5% | --- |
| Heavy metal(as Pb) | ≤20 mg/kg | ≤10 mg/kg |
| Coliform group | --- | ≤5000 mpn |
| Salmonellas | --- | Absent |
Pharma Grade:
| Item | USP32 |
| Assay(on dry basis) | 98.5% ~ 101.5% |
| PH Value | 5.5 ~ 7.0 |
| Specific rotation | -29.4° ~ -32.8° |
| Chloride(as Cl) | ≤0.05% |
| Sulfate(as SO4) | ≤0.03% |
| Iron(as Fe) | ≤0.003% |
| Heavy metals(as Pb) | ≤0.0015% |
| Loss on drying | ≤0.3% |
| Residue on ignition | ≤0.1% |
L-Tryptophan (Abbreviated Try) is one of human and animal essential amino acids. But it can't be synthesized by the body.
Like other amino acids, L-Tryptophan is one of the building blocks of protein. But unlike some amino acids, L-Tryptophan is considered essential because the body can't manufacture its own. L-Tryptophan plays many roles in animals and humans alike. But perhaps most importantly, it is an essential precursor to a number of neurotransmitters in the brain. As such, L-Tryptophan is the only substance normally found in the diet that can be converted into serotonin. Since serotonin is converted in the brain into melatonin, L-Tryptophan clearly plays a role in balancing mood and sleep patterns.
Used as nutritional supplement and antioxidant.
1. Used in the animal feed to improve animal feed intake, weaken stress reaction, improve animal sleeping.
2. Used in the animal feed to increase the antibody of fetus and young animals.
3. Used in the animal feed to improve milk secretion of dairy cattle.
4. Used in the animal feed to reduce the amount of high protein ration and save feed cost.
As a nutritional supplement, L-tryptophan is to make up amino acid infusions and comprehensive amino acid preparations together with other essential amino acids.
L-tryptophan is made by microbial fermentation which the glucose, yeast extract, ammonium sulfate are used as raw materials and get refined by membrane filtration, ion exchange, crystallization and drying process.
Our products meet MSDS safe standard and we have ISO and other certificate so yan can get high quality products from our company.
2. Price
We are the company which is the joint of trade and industry so we cao provide the competitive price and high quality product.
3.Packing
Generally, the package is 25 kg.
But,we can do according to the customers' request.
4.Transport
The products can be transported by Courier, by air or by sea
5.Service
We offer specialized logistic service including export declaration,customs clearance and every detail during shipment,this makes us able to offer you one-stop service from the order to the products transported to your hand.
Our company provides chemical raw materials, chemical products, pharmaceutical intermediates, veterinary intermediates, dye intermediates, pigments, cosmetic raw materials, chemical reagents and PVC particles to meet your various needs.
With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements.
Consistent Quality
Our plant has strict quality control in each manufacturing process. Guaranteed.Meanwhile all the materials are tested before each shipment in our laboratory to double confirm the quality.
Most competitive pricing
Our company is committed to the production and development of titanium dioxide, we always offer the most competitive pricing to customers to help lower their cost in application.
Shortest delivery time
90% of orders are shipped within 7-10 days after receipt of the prepayment or Western union
Respond in 24 hours to inquiry, feedback or other requirements
Our experienced staff is dedicated to answer all of your inquires, feedback or other requirements in 24 hours.
We welcome you to contact us for more information and look forward to working with you
Company Profile Introduction
Hebei Dangtong Biotechnology Co., Ltd. was established in 2021. Although we are a very young company, our leaders have been working in the chemical industry for 20 years. We believe our company can bring you the perfect customer experience.
We can provide you with chemical raw materials, chemical products, pharmaceutical intermediates, veterinary intermediates, dye intermediates, pigments, cosmetic raw materials and chemical reagents, can meet your various needs. Since the establishment of the company, adhere to the "quality first, customer first, integrity-based" business policy, always strive to meet the potential needs of customers. The trend of economic globalization is unstoppable. Our company is willing to cooperate sincerely with enterprises around the world to achieve a win-win situation.
We have been focusing on multiple areas of research and development, manufacturing, sales and service. Our sales and marketing office is located in Hebei Province, China, close to tianjin port, Qingdao port and other ports, providing great convenience for the integrated sales and purchasing of all our factories.
With consistent chemical quality, technology and service, quality products and services, grow together with customers in all aspects. We believe that our full range of products will leave you with the impression of the best expectations and innovations made in China.
If you are interested in our company and our products, please feel free to visit our website or contact us directly for more information. We look forward to establishing long-term stable and win-win business relationship with you.
If you have any requirements can contact us, we accept custom service.
Hebei Dangdang Import and Export Co., Ltd. is willing to grow with friends around the world!
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- Since:2021-05-08
- Address: Room 10-0-1001, Chunbei District, Shunde North Road, Xiangdu District, Xingtai city, Hebei Province