Model No.: X-CAS 153-94-6
Nutrient Composition: Vitamin
The content of active substances: ＞90%
Density: 1.362 G/cm3
BP: 447.9ºC At 760 MmHg
Place of Origin: Shandong, China (Mainland)
Supply Ability: in stock
Certificate: ISO CE
HS Code: 2933990090
White powder D-tryptophan CAS 153-94-6
D-tryptophan is a white or white-to-yellowish crystalline powder at room temperature. It has no odor or slight odor and tastes slightly sweet. Solubility 1.14 g (25 ℃) in water, soluble in dilute acid and dilute alkali, the stability of the alkali, acid decomposition, slightly soluble in ethanol, insoluble in chloroform, ether, growth, metabolism of people or animals play an important role, is called the second essential amino acids, and the chemical and physical properties of L – type almost exactly the same, only the optical rotation on the contrary, but they have diversity, function and the distribution of coenzyme, high melting point, in 200 degrees of above commonly, can dissolve in water, in the near uv region has the ability to absorb light.
D – tryptophan activity as a kind of non-protein amino acid, has special physiological properties, can be in the food industry and agriculture as a nutritional sweetener, feed additives, plant growth, in the pharmaceutical industry, mainly used for the synthesis of various peptides, instead of L – tryptophan, extend biologic half life of peptide drugs and reduce the side effects, not resistant body before and become an important synthetic enzyme inhibitors. It can improve the immune ability of the body and delay the occurrence of allergic reaction. Most polypeptide antibiotic resistant gram-positive bacteria, also some of gram-negative bacteria such as pseudomonas aeruginosa, mycobacteria, fungi, bacteria, germs, and has good restrain or kill role in tumor cells.
With D – tryptophan synthetic semisynthetic antibiotics, the side chain plays an important role for its pharmacological function, acyl enzyme in peptide bonds are difficult to beta, which have higher stability, and has a wide antimicrobial spectrum, low toxicity, low allergic, absorb quickly, the blood concentration is high, the efficacy of long duration, etc.
1.Cooperate with research institutions, we strictly control the process from raw material to finished product.
2.The customer comes first, we provide reasonable price, high quality product and prompt shipment.
3.We can send the goods to your delivery address directly. It is relatively safe and fast. We have ready goods in stock.
4.Quick and clear response to customers questions.
Warm after sale service, we will help to solve the problems in your usage.
5.We could make our price discount if you place a substantial order with us.
why choose us ?
1.Full experience of large numbers containers loading in Chinese sea port.
2.Fast shipment by reputed shipping line.
3.Packing with pallet as buyer’s special request.
4.Best service after shipment with e mail.
5.Cargoes together with container sales service available.
6.Full experience for Canada & Japan export.
7.Cargoes photo before and after loading into container.
8.Raw materials from Chinese origin.
Q1. Are you a manufacturer
Answer: Yes, we have our own factory called [ZhiShang Industry Group “, we export by ShandongZhishangchemical Co., Ltd.
Q2. Do you have GMP or DMF
Answer: Yes, we have GMP certificate for some products, and we can provide DMF as well.
Q3. What information should I let you know if I want to get a quotation
Answer: -Quality you require, eg. Assay, Purity, or single impurity
-Quantity you need
-Standard you want, such as USP, EP, JP etc.
Q4. How to make the payment
Answer: Escrow and T/T in advance are highly recommended. We can accept Western Union, Money Gram and Paypal as well
Q5. When will you deliver the goods
Answer: For sample(less than 1kg), in about 3 working days after payment; for larger orders (more than 1kg), in about 7 working days after payment.
Q6. How will you deliver the goods
Answer: We have strong cooperation with DHL, TNT, UPS, FEDEX, EMS, China Air Post. For container products, we can do sea shipping.
You also can choose your own shipping forwarder.
Q7. When will we receive the goods
Answer: For samples, we will send by TNT/DHL/FEDEX/UPS express, usually it takes about 3-5 to reach you; for larger orders, it will take about 7 -10days at most.
Q8. What if we find your products unsatisfied
Answer: We will send you a COA (Certificate of Analysis) to you first for you to confirm the quality, but if you find our products not confirm with the COA after you receive it, please show us your test result, we will refund you once we confirm that.
1> Cosmetic Raw Materials: Cosmetics is a variety of raw materials through a reasonable deployment of processing from the compound mixture. Cosmetics with a wide range of raw materials, different performance. According to the Raw Material properties and uses of cosmetics, can be divided into matrix materials and auxiliary raw materials in two categories.
2> Active Pharmaceutical Ingredients(API): API refers to the raw materials in the production of various types of preparations, which is the active ingredient in powder,crystal and paste for medicine use through chemical synthesis,plant extract, and preparations of biotechnology institute.
3> Fragrance And Spices: Spices are an important part of fine chemicals, it is composed of natural spices, synthetic spices and single fragrance.
4> Organic Raw Material: Intermediates are also known as organic intermediates. The use of coal tar or petroleum products as raw materials to produce dyes, resins, additives, and other intermediates.
5> Chemicals Used In Paints: Paint, the traditional Chinese name is paint. So-called coating is coated on the surface of the object that be protected or be adornment, and with the continuous film coating to form strong adhesion.
6> Pharmaceutical Intermediates: The so-called pharmaceutical intermediates, refers to the production of pharmaceutical products in the process, the use of raw materials, materials, accessories and other intermediate products.
7> Agricultural Chemicals: Research and agriculture related chemical, including pesticide, plant growth regulator, fertilizer, compound fertilizer, herbicide etc.