Monday, April 27, 2015

Overview of Polydatin

Polydatin is the glycoside of Resveratrol (sc-200808) originally isolated from the Chinese herb Polygonum cuspidatum. The compound has been shown to inhibit platelet aggregation and elevate the ratios of LDL-C/HDL-C and TC/HDL-C. Myocardial cell, white blood cell, vascular smooth muscle cell, and endothelial cell studies report that Polydatin can inhibit ICAM-1 expression, elevate Ca2+, weaken white blood cell-endothelial cell adhesion, and activate KATP channels.
Molecular Formula:C20H22O8
Formula Weight:390.38
Appearance: white powder
Specification: 98%(By HPLC)  
Melting Point : 130-140
Solubility: soluble in methanol
Storage:Preserve in tight, light-resistant containers,protected from moisture, and store at controlled room temperature.
from:Acridine Raw Material

Thursday, April 23, 2015

what is the Copper telluride?

Copper telluride is a gold and silver products in the production process, copper, tellurium and other elements.
Copper telluride is a black crystal powder at room temperature is relatively stable in the air. telluride of copper is not only important inorganic materials, but also
Tellurium and copper resources are stored in the excellent form. In H2SO4 solution, replacement of Te with Cu copper telluride, generated so many metal tellurium
Ion separation and enrichment are very high. Cu replacement Te, Te can be + 4 + 6, price or prices, can generate Cu2 Te, that is, not
By the valence of tellurium. in the oxidant in the presence of copper telluride with acid or alkali chemical reaction, which is the separation and recovery of Cu and
Te basis. In short, tellurium and copper compounds at higher temperatures with each other in the recovery of tellurium from the solution is very unique.
from:Rare Metals

Monday, April 20, 2015

what is the role of Eugenol ?

The Eugenol is an organic compound with the formula C10H12O2. The IUPAC name of this chemical is 2-methoxy-4-prop-2-enylphenol. With the CAS registry number 97-53-0, it is also named as phenol, 2-methoxy-4-(2-propen-1-yl)-. The product's categories are Antioxidant; Biochemistry. Besides, it is a clear colorless pale yellow or amber-colored liquid, which should be stored in a dark and cool place.It will be darkens and thickens on exposure to air. Also darkens with age. Eugenol may decompose on exposure to light. Insoluble in water.It reacts with strong alkalis. Eugenol is incompatible with strong oxidizers. This includes ferric chloride and potassium permanganate.
The Eugenol is used in perfumeries, flavorings, essential oils and in medicine as a local antiseptic and anesthetic. It is also a key ingredient in Indonesian kretek (clove) cigarettes. It was used in the production of isoeugenol for the manufacture of vanillin, though most vanillin is now produced from phenol or from lignin. Eugenol is attractive to males of various species of orchid bees, so it is commonly used as bait to attract and collect these bees for study. Eugenol derivatives or methoxyphenol are used in formulating insect attractants and UV absorbers, biocides, analgesics, and antiseptics. They are also used in manufacturing stabilizers and antioxidants for plastics and rubbers.
When you are using Eugenol, please be cautious about it as the following:
It is harmful if swallowed and may cause sensitisation by inhalation and skin contact. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Besides, Eugenol is irritating to eyes, respiratory system and skin and limited evidence of a carcinogenic effect. When you are using it, wear suitable protective clothing, do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer) and avoid contact with skin and eyes.
from:Natural standard substance

Thursday, April 16, 2015

what is the Lithium carbonate?

Name:Lithium carbonate
Formula: Li2CO3
Formula weight: 73.89
Density (g/cm3): 2.11
Bulk density (kg / l): Approx 0.8
Melting point: 732
Appearance:White granular powder
Uses:The main raw material for lithium batteries and other lithium products, raw materials.
Storage:Product does not require special conditions for storage.
from:Rare Metals

Monday, April 13, 2015

Application of Tetraethyl silicate

Tetraethyl orthosilicate(TEOS),also Tetraethyl silicate is the chemical compound with the formula Si(OC2H5)4. Often abbreviated TEOS, it is a colorless liquid that degrades in water. TEOS is the ethyl ester of orthosilicic acid, Si(OH)4. It is a prototypical alkoxide.
TEOS is mainly used as a crosslinking agent in silicone polymers and as a precursor to silicon dioxide in the semiconductor industry. TEOS is also used as the silica source for synthesis of zeolites. Other applications include coatings for carpets and other objects. TEOS is used in the production of aerogel. These applications exploit the reactivity of the Si-OR bonds.
Molecular Formula:     C8H20O4Si
Formula Weight:208.33
from:Acridine Raw Material

Thursday, April 9, 2015

Introduction of Sodium Thiopental

Sodium thiopental, also known as Sodium Pentothal (a trademark of Abbott Laboratories), thiopental, thiopentone, or Trapanal (also a trademark), is a rapid-onset short-acting barbiturate general anesthetic that is an analogue of thiobarbital. Sodium thiopental is a core medicine in the World Health Organization's "Essential Drugs List", which is a list of minimum medical needs for a basic healthcare system.It was previously the first of three drugs administered during most lethal injections in the United States, but the US manufacturer Hospira stopped manufacturing the drug and the EU banned the export of the drug for this purpose.
Medically induced coma
In addition to anesthesia induction, sodium thiopental was historically used to induce medical comas. It has now been superseded by drugs such as propofol because their effects wear off more quickly than thiopental. However, extended use of propofol risks the onset of propofol infusion syndrome.
Patients with brain swelling, causing elevation of the intracranial pressure, either secondary to trauma or following surgery, may benefit from this drug. Sodium thiopental, and the barbiturate class of drugs, decrease neuronal activity and therefore decrease the production of osmotically active metabolites, which in turn decreases swelling. Patients with significant swelling have improved outcomes following the induction of coma. Reportedly, thiopental has been shown to be superior to pentobarbital in reducing intracranial pressure.This phenomenon is also termed as Reverse steal Effect.
from:Rare Metals

Monday, April 6, 2015

Description of Coix seed oil

Coix Seed Oil 
Extracted from the seeds of Coix lachrymal-jobi. By SFE-CO2 method.
Anti-cancer, anti-tumor, especially to digestive and respiratory systems' cancer;
Enhances immune function, anti-inflammation;
Lowers the blood sugar and blood pressure level.
from:Natural standard substance