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Factory supply best Selling giant knotweed extract
1-1000 Kilogram
$68.00
≥ 1001 Kilogram
$20.00
- Item No.topMOQ1 Kilogram
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If over 500pcs, mass production will start until pre-production sample has been approved.
Est. 7 days production
Specifciation:
1.Competitive price
2.Fast Delivery Within 2 days
3.SGS , BV, GMP,ISO approve
4.Professional factory
1. Product name: Resveratrol
2. Botanical source: Polygonum cuspidatum sibeb.et zucc.
3. Biogenic origin: Wild in central and southern China
4. CAS NO.: 501-36-0
5. Specification: 10%-98% trans-resveratrol
6. Molecular formula: C14H12O3
7. Molecular Weight: 228.25
8. Characters: white powder with slight yellow cast
9. Solubility: Easily soluble in ether,chlorofrom, methanol,ethanol,acetone etc.
10. Usage: Pharmaceuticals, healthcares and cosmetics
Trans Resveratrol is a naturally occurring phytoalexin produced by some higher plants in response to injury or fungal infection. Phytoalexins are chemical substances produced by plants as a defense against infection by pathogenic microorganisms, such as fungi. Alexin is from the Greek, meaning to ward off or to protect. Resveratrol may also have alexin-like activity for humans. Epidemiological, in vitro and animal studies suggest that a high resveretrol intake is associated with a reduced incidence of cardiovascular disease, and a reduced risk for cancer.
1. Resveratrol protecting the heart and circulatory system, lowering cholesterol, and protecting against clots which can cause heart attacks and stroke.
2. Lowering cholesterin and the blood viscosity, reducing the risk of arteriosclerosis, cardio-cerebrovascular disease and heart disease.
3. Anti-virus and accommodate immunity, inhibit Staphylococcus aureus, Micrococcus catarrhalis, Bacillus coli, aeruginosus Bacillus, have better inhibit action with Orphan virus, Fever blisters virus, enteric virus and Kesaqi virus.
ANALYSIS | SPECIFICATION | RESULTS |
Appearance | Almost White crystalline powder | Complies |
Solubility | Complies | Complies |
Melting range | 250°C -255°C | 251°C -253°C |
Assay (HPLC) | Resveratrol≥98.0% | 98.9% |
Identity Test A | Positive reaction | Positive reaction |
Identity Test B | The retention time of the Assay preparation Corresponds to the Standard preparation | Complies |
IR Absorption | Concordant with the reference | Concordant with the reference |
Related substance | Single impurity≤0.5% | 0.05% |
Total impurities≤1.0% | 0.05% | |
Water | ≤1.0% | 0.3% |
Residue on ignition | ≤1.0% | <0.1% |
Heavy Metals | <20ppm | Complies |
Residual Solvents | Ethyl acetate <5000ppm | <1ppm |
Chlorobenzene not be detected | Not be detected | |
Ethanol<5000ppm | 352ppm |
Qingdao xigema Chemical Co.,Ltd 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 xigema 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.
xigema has become the "Top 500 Chinese manufacturing companies","Top 20 of global chemical sales".xigema has 21 subsidiaries and holding companies.
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.
If you are interested,welcome to contact with us.
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