39021 Results for: "3-Bromo-5-chlorobenzyl+alcohol"

Supplier: Restek

Contains 1 ml each of the followig mixtures, 8270 calibration mix #1, 8270 calibration mix #2, 8270 calibration mix #3, 8270 calibration mix #4, 8270 calibration mix #5 revised and 3-methylcholanthrene standard.

Supplier: WORLD PRECISION INSTRUMENTS LLC

The properties of this bio-compatible surgical adhesive make it exceptionally useful for neuroscience applications, peripheral nerve studies and similar biomedical applications. These  silicone elastomers also eliminate the mess and time involved in pre-mixing other commonly used formulations (such as Wacker SilGel^®and Sylgard^®). Each silicone elastomer is packaged in a double barrel syringe and is automatically mixed when pressed out of the mixer tip provided.

Supplier: MP Biomedicals

Storage: +4°C, protect from light
3- (4,5-Dimethyl-2-thiazolyl-2)-2,5-diphenyl-tetrazolium bromide is used as a colorimetric metabolic activity indicator in cell viability assays. Thiazolyl Blue Tetrazolium Blue (MTT) is a dye used in measurement of cell proliferation. MTT produces a yellowish solution that is converted to dark blue, water-insoluble MTT formazan by mitochondrial dehydrogenases of living cells. The blue crystals are solubilized with acidified isopropanol and the intensity is measured colorimetrically at 570 nm. MTT has been used as a histochemical/cytochemical reagent and for the detection of NAD. ADP-linked enzyme systems in tissue cannot be detected with MTT, due to binding of the cation by the cyanide trap used. MTT is rapidly reduced to the formazan, which chelates with nickel, copper, and cobalt; the cobalt chelate has been used in oxidative systems.

Supplier: MP Biomedicals

β-Mercaptoethanol can act as an enzyme reactivator in systems necessitating reduction for activation, and has been commonly used to reduce disulfide bonds in order to separate protein subunits for use in electrophoresis.
2-Mercaptoethanol is used to reduce disulfide linkages in solubilizing proteins for gel electrophoresis (typically used in SDS-PAGE sample buffer at 5% concentration). Also reduces excess oxidative polymerization of catalysts. Cleaving intermolecular (between subunits) disulfide bonds allows the subunits of a protein to separate independently on SDS-PAGE. Cleaving intramolecular (within subunit) disulfide bonds allows the subunits to become completely denatured so that each peptide migrates according to its chain length with no influence due to secondary structure. In solution, 2-mercaptoethanol is readily oxidized in air to a disulfide, especially at alkaline pH. Because of this property, it is widely used to protect proteins, enzymes in particular, from becoming inactive. An excess of 2-mercaptoethanol (generally used at 0.01 M) will maintain the protein thiol groups in their reduced state.

Supplier: MP Biomedicals

Bilirubin is the principal pigment of bile and constituent of many biliary calculi and also found in blood. As the major end-product of the biological breakdown of heme, bilirubin is the chromophore responsible for coloration in various forms of jaundice.
Bilirubin is suitable for use in the preparation of standard stock solutions of bilirubin for color density comparison in the determination of serum bilirubin.
It appears to function as an antioxidant and efficient peroxyl radical scavenger, protecting membrane lipids from oxidation by these radicals. At nanomolar concentrations it has been shown to protect neurons from oxidative damage.
Bilirubin is produced from Ox-gall which is sterilized before extraction with high pressure vapour at 120 °C. Then the bilirubin is extracted in a continuous extraction process with chloroform as a crude product. Recrystallization and purification is with ethanol and chloroform.
-20°C. Protect from light.

Supplier: Epredia

Enhance the nuclear definition and clarity of Signature Series hematoxylins with Epredia™ Signature Series Clarifier™ 1, 2.

Supplier: Hardy Diagnostics

The Total-Fix™ fixative is a single vial system for the preservation of fecal specimens. Total-Fix™ preserved fecal specimens can be used for the formalin sedimentation concentration, permanent stained smears (trichrome or iron-hematoxylin), fecal immunoassays, and DFA for Cryptosporidium spp. and Giardia lamblia.

Supplier: First Aid Only

The Industrial sized first aid cabinet.

Supplier: First Aid Only

This XL SmartCompliance Cabinet has more of what users need and is organized for reordering ease

Supplier: MP Biomedicals

Storage: Room Temperature
2-Mercaptoethanol is a hybrid of ethylene glycol and 1,2-ethanedithiol. It is used to reduce disulfide bonds and can act as a biological antioxidant by scavenging hydroxyl radicals. It is widely used because the hydroxyl group confers solubility in water and lowers the volatility. Due to its diminished vapor pressure, its odour, while unpleasant, is less objectionable than related thiols.
2-Mercaptoethanol is used to reduce disulfide linkages in solubilizing proteins for gel electrophoresis (typically used in SDS-PAGE sample buffer at 5% concentration). Also it reduces excess oxidative polymerization of catalysts. Cleaving intermolecular (between subunits) disulfide bonds allows the subunits of a protein to separate independently on SDS-PAGE. Cleaving intramolecular (within subunit) disulfide bonds allows the subunits to become completely denatured so that each peptide migrates according to its chain length with no influence due to secondary structure. In solution, 2-mercaptoethanol is readily oxidized in air to a disulfide, especially at alkaline pH. Because of this property, it is widely used to protect proteins, enzymes in particular, from becoming inactive. An excess of 2-mercaptoethanol (generally used at 0.01 M) will maintain the protein thiol groups in their reduced state.

Supplier: MP Biomedicals

IPTG (isopropyl-β-thiogalactoside) is an analogue of allolactose that binds specifically to the repressor protein of the lac operon and induces expression of β-galactosidase in Escherichia coli.
IPTG is a commonly used reagent in cloning procedures that require induction of b-galactosidase activity and is used in conjunction with X-Gal in blue-white color selection of recombinant bacterial colonies.
The final concentration typically used in indicator plates is 0.2 mM.

Supplier: Promega Corporation

Isolates high-quality plasmid DNA from bacterial cultures

Supplier: MP Biomedicals

Storage: Store at Room Temperature (15-30 °C)
Glycine is a non-essential amino acid. It is only amino acid with no asymmetric carbon and thus is not chiral. It is the major inhibitory neurotransmitter. It is involved in the biosynthesis of the porphyrin rings of hemes and chlorophylls.
Glycine is commonly used in buffer solutions, in electrophoresis and preparative chromatography. A study of the folding of monoclonal antibodies in the presence of glycine and their subsequent purification has been published. The use of glycine in the purification of lipopolysaccharides, lipooligosaccharides, and lipid A has been reported. It is an amino acid for use in cell culture media development applications and existing media formulations. Glycine is commonly used as a component in Tris-glycine and Tris-glycine-SDS running buffers for polyacrylamide gel electrophoresis, a component of Towbin's transfer buffer for Western blots, a buffer substance in cryoenzymology, in osmotic pressure maintenance in isoelectric focusing of erythrocytes, salting-in effect in protein chemistry, and as a buffer component in the coupled phosphatase-kinase reaction for end labelling of restriction fragments. The growth requirements of various microorganisms is reported in the Handbook of Microbiology.
Glycine is a non-chiral amino acid that can be synthesized in the body from the amino acid serine by Serine Hydroxymethyltransferase. Inhibitory neurotransmitter in spinal cord, allosteric regulator of NMDA receptors.

Supplier: MP Biomedicals

Agar is a polysaccharide complex extracted by bleaching and hot water treatment of agarocytes from the red alga Rhodophyceae, and usually consisting of the genera Gelidium, Acanthopeltis, Ceramium, Pterocladia and Gracilaria. The algae are typically found in the Pacific and Indian Oceans and in the Sea of Japan. It is primarily composed of two different units: Agarose and Agaropectin; Agarose is a neutral gelling component which is composed of a linear polymer of alternating D-galactose and 3,6-anhydrogalactose units. Agaropectin is a non-gelling component which consists of D-1,3-glycosidically linked D-galactose units, some of which are sulfated at the 6th position.
Agar is typically used in (According to the Merck Index): Substitute for gelatin, isinglass, etc. in making emulsions including photographic, gels in cosmetics, and as thickening agent in foods especially confectionaries and dairy products; in meat canning; in production of medicinal encapsulations and ointments; as dental impression mold base; as corrosion inhibitor; sizing for silks and paper; in the dyeing and printing of fabrics and textiles; in adhesives. In nutrient media for bacterial cultures.

Supplier: MP Biomedicals

Applications:
Urea is used for the denaturation of proteins and as a mild solubilization agent for insoluble or denatured proteins. Useful for renaturing proteins from samples already denatured with 6 M guanidine chloride such as inclusion bodies and in the extraction of the mitochondrial complex. It is commonly used to solubilize and denature proteins for denaturing isoelectric focusing and two-dimensional electrophoresis and in acetic acid-urea PAGE gels. May be used with guanidine hydrochloride and dithiothreitrol (DTT) in the refolding of denatured proteins into their native or active form. Urea is used in cell or tissue culture media to increase the osmolality. Urea has also been used as fertilizer because of the easy availability of nitrogen; in animal feeds; it is reacted with aldehydes to make resins and plastics; condensed with malonic ester to form barbituric acid; used in the paper industry to soften cellulose.
Biochem/physiol Actions:
Urea has been shown to act as an aldosterone antagonist in the development of peanut agglutinin binding in cultured embryonic renal collecting duct epithelial cells. Urea is the principal end product of nitrogen metabolism in most mammals, formed by the enzymatic reactions of the Kreb's cycle.
Typical Working Concentration:
The use of 2 g/L urea in the culture of Kluyveromyces marxianus to produce a thermostable extracellular lipase has been described. Urea is typically used at a concentration of 8 M for protein denaturation or solubilization. A final concentration of 5 M urea is commonly used in molecular biology for sequencing gels. To prevent carbamylation, do not heat urea containing buffers above 37 °C

Supplier: IBI Scientific

The Total RNA Mini and Maxi Kits for Plants provide a simple and fast method to isolate total RNA from plant tissue and cells

Supplier: Zymo Research

Part of the ZymoPURE plasmid kits collection, the ZymoPURE II™ plasmid midiprep kits provides the fastest and simplest method available to efficiently isolate up to 1.2 of transfection grade plasmid DNA from E. coli.

Supplier: IBI Scientific

The Large DNA Fragment Extraction Kits are designed to recover large DNA fragments (>8Kb) from an agarose gel

Supplier: IBI Scientific

Kits provide a fast and economical method for the purification of total DNA (including genomic, mitochondrial, and viral DNA) fresh whole blood, plasma, serum, buffy coat, other bodily fluids, lymphocytes, bacteria, and cultured cells

Supplier: MP Biomedicals

Citric acid is a key metabolic intermediate. Citrate is the starting point of the tricarboxylic acid cycle. Its concentration also coordinates several other metabolic pathways. Citric acid can form complexes with various cations, particularly with iron and calcium. In animals, citric acid improves the utilization of nutritional calcium. Citric acid is produced commercially by fermentation of carbohydrates derived from corn starch and from beet molasses.
Citric Acid, Trisodium Salt, Dihydrate is used as a substrate for citrate lyase, a buffer component; an anticoagulant. For anticoagulation use it is typically used at a concentration of approximately 0.129 M (i.e. for 4.5 mL blood use 16.0 mg sodium citrate and 2.1 mg citric acid).
To make a sodium citrate buffer use equimolar concentrations (typically approximately 0.05 M concentration) of citric acid, free acid and sodium citrate. Add equal volumes of each solution and titrate to the desired pH.
Room Temperature

Supplier: IBI Scientific

Kit is designed to recover or concentrate DNA fragments (50bp–10kb) from agarose gel, PCR, or other enzymatic reactions

Supplier: Zymo Research

Part of the ZymoPURE plasmid kits collection, the ZymoPURE II™ plasmid maxiprep kits provides the fastest and simplest method available to efficiently isolate up to 3 mg of transfection grade plasmid DNA from E. coli.

Supplier: Omega Bio-Tek

Isolate DNA from tissues, buccal swabs, cultured cells, whole blood, body fluids, paraffin-embedded tissues, and mouse tail snips using mini spin columns.

Supplier: IBI Scientific

Kits are designed specifically for purifying total DNA (including genomic, mitochondrial, and viral DNA) from a variety of animal tissue, paraffin-embedded tissue, buccal swab, and amniotic fluid

Supplier: IBI Scientific

IBI's Hi-Speed Mini Plasmid Kit is designed for rapid isolation of plasmid or cosmid DNA from bacterial cultures

Supplier: IBI Scientific

The Total RNA Mini and Maxi Tissue Kits are specially designed for purification of total RNA from a variety of animal tissues or cells

Supplier: MP Biomedicals

Trypan Blue is a blue acid dye with a strong affinity for cellulose containing substrates such as cotton; less affinity for proteinaceous materials. Trypan blue solution may be used in trypan blue based cytotoxicity and proliferation assays.
Trypan Blue is used as a vital dye which is especially important because it is taken up by the reticuloendothelial system. Clark describes assays for the study of teratogenic action of trypan blue on embryonic tissues using Davis and Sauter's fluorescence method and for the staining of collagen, including very fine fibrils, muscle and cornified epithelium using the Van Gieson method. Trypan blue is also recommended for use in dye exclusion procedures for viable cell counting. Non-viable cells will up-take trypan blue at a faster rate than viable cells.

Supplier: Promega Corporation

The ReliaPrep gDNA Tissue Miniprep System provides a complete, ready-to-use method for purification of gDNA from up to 25mg of tissue, a buccal swab, or a 1cm mouse tail snip, obtaining intact gDNA without the use of ethanol washes or precipitations.

Supplier: G-Biosciences

G-Biosciences' GET™ CLEAN DNA kit uses high binding affinity GET™ Spin Columns to remove exess salts, enzymes, unincorporated nucleotides, radiolabels, and primer-dimers from any DNA preparation of 100 base pairs to >20kb

Supplier: Omega Bio-Tek

The MagBind Universal Pathogen 96 Kit allows rapid and reliable isolation of high-quality host genomic DNA, gram positive and negative bacterial DNA, fungal spore DNA, viral DNA, and viral RNA from tissue, urine, serum, and fecal samples