2017年6月7日星期三

3,3'-Diaminobenzidine tetrahydrochloride

Product Name: 3,3'-Diaminobenzidine tetrahydrochloride
CAS: 7411-49-6
Molecular Formula: C12H18Cl4N4
Molecular Weight: 360.1101
Product description: Light brown powder or gray or white crystalline powder. Moderately soluble in water, insoluble in most organic solvents. Melting point is 300 ℃. Spectrophotometric assay of selenium reagent. HRP peroxidase substrates suitable for Western blotting and immunohistochemical staining methods. The substrate can produce insoluble brown at the end of the product of its kind. May be seen. Or with peroxidase staining visible to the naked eye: to distinguish the two types of mycobacteria in a polyacrylamide catalase gel (mycobacterial catalase); Red blood protein specific indicator on polyacrylamide gel.

What is Acridine Orange

Product name: Acridine Orange
CAS: 10127-02-3
Molecular Formula: C34H40Cl4N6Zn
Molecular Weight: 739.9426
Product Description: orange powder. Soluble in water, ethanol. The solution for the orange fluorescent green belt. PH value of 8.4-10.4, no fluorescence. Can be between two adjacent pairs of bases, the part liberated from the double helix of DNA, the two bases of expansion of the spacer. Such a DNA replication process can increase the DNA strand or a missing base, which causes mutations in the reading frame. As a fluorescent tracer, tumor cells and bacteria, nucleic acid staining and mutagenic mutations of the reading frame. The acridine orange is a kind of fluorescent pigment, acridine orange filter wavelength of 488 nm. Filter wavelength blocking at 515 nm. Acridine orange combined with DNA and RNA in the volume of the cell, there is a difference, but a different color fluorescent specificity (grayed), this is because DNA is a high-absorption polymer The location of fluorescent material is lower, green fluorescence hair low degree of polymerization and RNA material can and fluorescent associated with the location of the greatest number, so that the red fluorescence of the hair.

Haematoxylin price

Product Name: Haematoxylin
CAS: 517-28-2
Molecular Formula: C16H14O6
Molecular Weight: 302.28
Product Description: One of the most commonly used dyes and dyes is a kind of natural media. Used for silk, fur and leather dyeing and cotton printing, available in blue or black color spots. In aqueous solution, in particular in a simple oxidation of the alkaline solution by air oxidation with red-brown hematoxylin. Hematoxylin can not dye should be exposed to the Belüftungsort make oxidation-hematoxylin (also called wood grain) to use, which is "mature". Hematoxylin process "mature" takes longer, more configuration, the strength of coloring is stronger. Dyed material must be made by metallic salts as an agent before dyeing the force. Thus, in the manufacture of hematoxylin dye with mordants.

Propidium iodide

Product Name: Propidium iodide
CAS: 25535-16-4
Molecular Formula: C27H35N4
Molecular Weight: 415.5931
Product Description: staining of the nucleus of reagents for DNA, which is commonly used in the detection of cellular apoptosis, the full English name is propidium iodide. It is a kind of ethyl bromide body analogs that release red fluorescence after coating the double-stranded DNA. Although PI can not live through the cell membrane, but can by damaging the cell membrane and nuclear staining. PI is often used with calcein - AM or fluorescent probes are used together, such as FDA for dyeing on living cells and dead cells at the same time.

Glycidyl methacrylate price

Product Name: Glycidyl methacrylate
CAS: 106-91-2
Molecular Formula: C7H10O3
Molecular Weight: 42.15
Product Description: It is mainly used for powder coating, which is also used for thermosetting coating, fiber treatment agent, adhesive, anti-static agent, stabilizer, rubber and vinylchloridharzmodifizierer, Ions and the adhesive of printing inks. 2. used as polymerization of functional monomers. Mainly used in the production of acrylic powder coatings for the soft monomer, copolymerization of hard monomers, such as methyl methacrylate and styrene, glass transition temperature, and adjust flexible, gloss, adhesion and resistance to Weathering can improve the coating. Also used in the preparation of the acrylic emulsion and the nonwoven fabric. As the functional monomer can be used without soluble adsorbent, etc. In the production of photosensitive resin, an ion exchange resin and a chelate resin, the selective filtration membrane of dental materials for medical use, which means. Also for a polyolefin resin, rubber and synthetic fibers have been modified.

Cefapirin sodium

Product Name: Cefapirin sodium
CAS: 24356-60-3
Molecular formula: C17H16N3NAO6S2
Molecular Weight: 45.44
Product Description: belongs to the first cephalosporins of the first generation, cefepime sodium wood as the first generation of semisynthetic cephalosporins. The clinical use of the sodium salt by intramuscular injection or intravenous drug administration. Mechanism of action: horse, sodium as a fungicide. Antibacterial mechanisms to inhibit the biosynthesis of bacterial cell walls. This product has with bacterial cell membranes on the target protein, the penicillin binding protein (PBP) has a high affinity, a major role in PBP1 and PBP3 (1a and 1b).

Asarone

Product Name: Asarone
CAS: 5273-86-9
Molecular formula: C12H16O3
Molecular Weight: 208.26
Product Description: This product main components for the Alpha Asarone, are the main active ingredients of Calamus healing stone, have a wheeze smooth, cough, which eliminates phlegm, calming, spasmolysis, anticonvulsants, etc. Asthma: This product can histamine and acetylcholine, bronchial relief to fight cramp; Cough, center of the cough has a strong inhibition; Expectoranting: this product may increase respiratory secretions, thinning of sputum; Rest: can significantly reduce spontaneous activity and no inhibition; Spasmolysis: similar aminophylline, have the effect of relaxing the smooth muscles of the bronchi; Anticonvulsants: a - Asarone can improve the threshold point of stimulation of the cortex, synaptic transmission of electrical stimulation and epileptiform discharge. The Great Mal has a significant curative effect.