100% Natural Voacanga Africana Extract Pure vinpocetine powder
  • Item No.TOP
    MOQ10 Gram / Grams
    description

     

    Product Description

     

    company

     product description

    Vinpocetine is a semisynthetic derivative of the alkaloid vincamine, an extract from the periwinkle plant. Vinpocetine is reported to have cerebral blood-flow enhancing and neuroprotective effects, and is usedas a drug in Eastern Europe for the treatment of cerebrovascular disorders and age-related memoryimpairment.  

    COA

    Item

    Specification

    Result

    Identification

    S  Sample IR spectrum matches reference standard IR spectrum

    Conforms

    Appearance

    White or slightly yellow, crystalline powder

    White Powder

    Specific Rotation, C=1 [a]D20

    +127 ~ +134

    +132

    Melting Point

    149°~ 153°

    152°

    Solubility

    Practically insoluble in water

    Soluble in methylene chloride

    Slightly soluble in anhydrous ethanol

    Conforms 

    Related Substances

    Impurity A: 0.6% Max.

    0.16%

    Impurity B: 0.5% Max.

    0.13%

    Impurity C: 0.3% Max.

    0.05%

    Impurity D: 0.5% Max.

    0.1%

    Unspecified Impurity: 0.1% Max.

    0.02%

    Total Impurity

    NML1.0%

    0.01%

    Loss on Dried

    NML0.5%

    0.20%

    Sulphated Ash

    NML0.1%

    0.03%

    Heavy Metals

    NML10ppm

    Complies

    Assay (On dried basis)

    98.5%-101.5% by HPLC

    function

     

    1. Vinpocetine is applicable to the sequelae of cerebral infarction, cerebral hemorrhage sequelae, cerebral arteriosclerosis etc..
    2. Vinpocetine is cerebral vasodilator, inhibit phosphodiesterase activity, increased vascular smooth muscle relaxation effect of messenger c-GMP, selectively increase cerebral blood flow, in addition can inhibit platelet aggregation, reduce blood viscosity, enhance the red cell deformation force, improve liquidity and microcirculation, promote brain tissue glucose uptake, increased brain oxygen consumption, improve cerebral metabolism.

    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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    Packaging & Shipping

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    Our 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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    https://www.sigmachemical.com.cn/

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