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Monthly Archives: October 2013


5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid,7-amino-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-, (6R-trans)-;7-AMTCA;


Molecular formula:C10H12N6O3S2

Molecular weight:328.36

Specification: ≥97%


used in the production of Cefpiramide, cefamandole, cefoperazone and Cefmenoxime.

Product description:7-TMCA is a white to pale yellow crystalline powder, it is used in the synthesis of cefpiramide, cefoperazone, cefmenoxime, etc.

Tin foil is ablaze white bright bendable metal with the melting point 231.9℃ and the baking point 2507℃.Soluble in concentrated hydrochloric acid,aqua regia.Gradually acrid in algid adulterate acid.Used as phosphate of actuate boiler augment water,reagent of actuate arsenic.


Tin foil, aswell spelled tinfoil, is a attenuate antithesis fabricated of tin. Actual Tin foil was abolished by cheaper and added durable[citation needed] aluminium antithesis afterwards World War II, although aluminium antithesis is still referred to as “tin foil” in abounding regions.


Tin foil was acclimated as a bushing for tooth cavities above-mentioned to the 20th aeon and acclimated as “grills” in the actual end of the 20th century.


Tin foil was acclimated in World War II by the Allies, who alone strips of it to abash the enemy’s radar. World War II was aswell if artificial blanket began to beat the acceptance of aluminum foil. The war aswell prompted administration and attention measures for all sorts of materials, including tin. People on the home foreground in the United   States, for example, were encouraged to save their strips of tin foil, cycle them into a brawl and about-face them in for salvage. The calm antithesis assurance in some towns could be exchanged for chargeless access to a cine theater.

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chemical reagent

IFN-gamma ELISA Kit Human in vitro ELISA (Enzyme-Linked Immunosorbent Assay) kit is advised for the quantitative altitude of IFN gamma in supernatants, buffered solutions or serum and claret samples and added physique fluids.

A monoclonal antibiotic specific for IFN gamma has been coated assimilate the wells of the microtiter strips provided. Samples, including standards of accepted IFN gamma concentrations, ascendancy specimens or unknowns are pipetted into these wells. During the aboriginal incubation, the standards or samples and a biotinylated monoclonal antibiotic specific for IFN gamma are accompanying incubated. After washing, the agitator Streptavidin-HRP, that binds the biotinylated antibiotic is added, incubated and washed. A TMB substrate band-aid is added which acts on the apprenticed agitator to abet a black acknowledgment product. The acuteness of this black artefact is anon proportional to the absorption of IFN gamma present in the samples.

This kit will admit both autogenous and recombinant Human IFN gamma.

1.VK-T06 small particle size , surface area , surface atoms and more, high surface energy , surface atoms with a serious shortfall , with strong surface activity and super- adsorption capacity , add in the paint , easily and resin cooperation with the oxygen from the key to improve the bond force between the molecules and the performance and construction of the paint film and the bonding strength between the substrate ;

2.VK-T06 has a conventional materials do not have special optical properties and widespread “blue shift” phenomenon, long-wave ultraviolet , infrared reflectivity as high as the spread above, and titanium dioxide optical reflection spectrum reproducible, it added UV coatings can achieve the purpose of shielding , significantly improve the coating anti-aging properties ;

3.VK-T06 has a small size effect to produce silt infiltration role in the formation of a dense coating layer interface “nano coating ” greatly improved scrub resistance and paint coating surface self-cleaning ;

4.VK-T06 specific spatial network structure, the surface of a large residual unsaturated bond and a hydroxyl group of different states bonding , coating systems can be produced with good affinity , thus improving the stability of the coating suspension . After drying the coating , the nanoparticles are arranged closely to form a complete air insulation.

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Nano nanometers

Using: Spice average body, anesthetic intermediate, agreement reagent.

Trimethylsilylacetylene is an acetylene atom adequate on one end by the trimethylsilyl group. It is bargain acclimated in alkynylations, e.g. the Sonogashira reaction. After desilylation (e.g. with TBAF), the ethynyl accumulation is introduced. Using a adequate alkyne, as against to acetylene gas, prevents added (undesired) coupling reactions and aswell has the account of getting a liquid.

This admixture is commercially available. It may aswell be able in a address agnate to added silyl compounds: deprotonation of acetylene with a Grignard reagent, followed by acknowledgment with trimethylsilyl chloride.

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Chemical raw material

Cytosine is one of 5 nitrogenous bases that are absorbed to a 5 carbon sugar, pentose, and a phosphate accumulation to accomplish nucleotides. Nucleotides are the units that accompany calm to accomplish DNA and RNA molecules. The added bases, besides cytosine, that accomplish up a DNA atom are adenine, guanine and thymine. In an RNA molecule, uracil replaces thymine.

The bases are breach into two altered groups. Adenine and guanine are purine bases and cytosine, thymine and uracil are pyrimidine bases. The two groups alter in their basal structure. Purine bases are fabricated up of two rings of atoms, while pyrimidine bases are fabricated up of alone one ring. The bases are alleged nitrogenous bases as the rings accommodate nitrogen and carbon atoms.

The bases consistently alone brace with one added base. Purine bases band with alone pyrimidine bases. Purine bases never band with added purine bases and pyrimidine bases never band with added pyrimidine bases. Specifically, cytosine consistently pairs with guanine and adenine pairs with thymine or uracil, depending on whether in a DNA or RNA molecule. This bond is referred to as specific abject pairing.

Main functions and furnishings (substitute methionine or acclimated alone as additive):

1) Provide methyl for banty and pig growing.

2) Maintain abdominal trace function, and enhances the alleviative aftereffect of the anti-ball insect medicine.

3) Adjust osmotic pressure, advance growth, accession the egg artefact efficiently, abate weaner diarrhea, and access weaner aliment taken.

4) Enhance fat metabolism, abate belly fat, enhance the angular meat rate, and advance beastly physique quality.

5) A acceptable tempts for aquatic, and enhance fish¡¢shrimp anti- osmotic burden ability, abate the mortality.

6) Stabilize vitamin in feed, accession the augment use efficiency, and abate the augment cost.

1) Not beneath than 40 meshes, ablaze chicken powder, acceptable fluency.

2) Artefact content: authentic betaine not beneath than 30%.

3) Recommended accession (per ton blueprint feed):

a) Barter methionine (according to 1:1 barter proportion): can acting 20%-60% constructed methionine in the feed.

b) Only use as the augment additive: 0.2-1kg for monogastric animals, 1-3kg for amphibian animals

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Betaine Hcl