Top quality l-tyrosine powder with best price 60-18-4

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Top quality l-tyrosine powder with best price 60-18-4
Top quality l-tyrosine powder with best price 60-18-4
Top quality l-tyrosine powder with best price 60-18-4
Top quality l-tyrosine powder with best price 60-18-4
Top quality l-tyrosine powder with best price 60-18-4
Top quality l-tyrosine powder with best price 60-18-4
Top quality l-tyrosine powder with best price 60-18-4

Top quality l-tyrosine powder with best price 60-18-4

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$30.00
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If over 500pcs, mass production will start until pre-production sample has been approved.

Est. 7 days production

Product Description

    Product Description

NameL-Tyrosine
CAS60-18-4
EINECS200-460-4
MFC9H11NO3
MW181.19
MP>300 °C (dec.)(lit.)
alpha -11.65 º (c=5,DIL HCL/H2O 50/50)
density 1.34
Storage tempStore at RT
Assay99% Min.
AppearanceWhite crystalline powder
UsageAmino Acids

   Certification of Analysis

 

Tests

Limits

Description

White crystals or crystalline powder

Identification

Concordant with the reference spectrum

Assay

98.5~101.5%

Specific Rotation

-9.8℃~-11.2°

Chloride(Cl)

≤0.04%

Sulfate(SO4)

≤0.04%

Heavy metals(Pb)

≤15ppm

Iron(Fe)

≤30ppm

Loss on drying

≤0.3%

Residue on ignition

≤0.4%

Chromatographic purity

Individual impurity ≤0.5%

Total impurities ≤2.0%

 

 

Function&Application

 

Aside from being a proteinogenic amino acid, tyrosine has a special role by virtue of the phenol functionality. It occurs in proteins that are part of signal transduction processes. It functions as a receiver of phosphate groups that are transferred by way of protein kinases. Phosphorylation of the hydroxyl group can change the activity of the target protein, or may form part of a signaling cascade via SH2 domain binding.

A tyrosine residue also plays an important role in photosynthesis. In chloroplasts (photosystem II), it acts as an electron donor in the reduction of oxidized chlorophyll. In this process, it loses the hydrogen atom of its phenolic OH-group. This radical is subsequently reduced in the photosystem II by the four core manganese clusters.

 
Company Information

Qingdao Sigma chemical Co., Ltd is is a global chemical industry manufacturers and suppliers of pharmaceuticals and intermediates, food and feed additives, herbal extracts, agrochemicals and fine chemicals etc.
 
The aim of Qingdao Sigma chemical Co., Ltd is a quality policy that "Elements in the system all have been satisfied, Personnel has been trained; Every batch of material is checked, Each procedure guarantees the quality; Every bag of our products is top grade, Service is thoughtful all the time, quality and reputation to increase market share and promote enterprise development. The quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services.

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FAQ
Q1: Are you a manufacturer?
Answer: Yes, we are factory founded on 2002.
 
Q2: How to contact with us?
Click the Alibaba "Contact Supplier" And then send us message the product you interest in, you will get reply within 24 hours.
 
Q3:Which kind of payment terms do you accept?
For small order,you can pay by T/T,Western Union or Paypal,nomal order by T/T to our company account
 
Q4:Can you give me a discount price?
Surely,It depend on your qty
 
Q5:How can i get a sample?
free samples is available,but freight charges will be at your account and the charges will be return to you or deduct from your order in the future.
 
Q6: How to confirm the Product Quality before placing orders?
A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
 
Q7:How do you treat quality complaint?
A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.
 
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