3988 Results for: "Compendia-grade chemicals"

Supplier: MP Biomedicals

Storage: Store at Room Temperature (15-30 °C). Store Desiccated. Store under nitrogen.
L-Cysteine is a proteinogenic amino acid incorporated into proteins as directed by the genetic code. The thiol-side chain participates in a variety of oxidation/reduction reactions within the cell. The side chain participates in the formation of β bonds that modulate the secondary and ternary structure of proteins. Cysteine is essential and limiting for the formation of glutathione, an important antioxidant, within the cell.
Cysteine has been used in pulse-chase experiments to study protein expression from an inducible promoter. L-Cysteine is used to supplement cell culture media.
NMDA glutamatergic receptor agonist.

Supplier: Sartorius

Compact laboratory water systems for 10 liters per day.

Supplier: BioFit

Easy to fold, highly mobile and engineered to last, The Intermediate rectangular table is built to fit everyone from students to adults and has a 74 cm (29") high surface height when deployed. Ergonomic ABS seats comfortably accommodate 12 users, providing 61 cm (24") of space for each occupant.

Supplier: Promega Corporation

Recombinant full-length human Aurora A was expressed by baculovirus in Sf9 cells using an N-terminal GST tag. Aurora A belongs to a multigenic family of mitotic serine/threonine kinases, which are involved in the control of chromosome segregation.

Supplier: Promega Corporation

Recombinant full-length human Aurora A was expressed by baculovirus in Sf9 cells using an N-terminal GST tag. Aurora A belongs to a multigenic family of mitotic serine/threonine kinases, which are involved in the control of chromosome segregation.

Supplier: MP Biomedicals

Storage: Room Temperature, desiccate
Potassium phosphate is a reagent with high buffering capacity. It occurs in several forms: monobasic, dibasic and tribasic (K3PO4). Most pH neutral potassium phosphate buffer solutions consist of mixtures of the monobasic and dibasic forms to varying degrees, depending on the desired pH.
Potassium phosphate monobasic is typically used as a component for a wide variety of media used in the culture of microorganisms. It is widely used in molecular biology, biochemistry, and chromatography. It is a component in phosphate buffered saline (PBS). In addition to helping maintain pH, it supplies essential phosphate.

Supplier: MP Biomedicals

Calcium Chloride is a salt of calcium and chloride. It behaves as a typical ionic halide, and is solid at room temperature.
Calcium chloride is a commonly used reagent in biochemistry. It plays important roles in many biological processes, including signal transduction, muscle contraction, and maintenance of cell membrane and cell wall stability. Calcium chloride is used in the preparation and transformation of competent E. coli and in the transfection of eukaryotic cells with either plasmid DNA or high molecular weight genomic DNA. It has been used in the stabilization and two dimensional crystallization of the NADH-ubiquinone oxidoreductase (complex I) from Escherichia coli. It is also used as a dessicant, coagulant in rubber manufacturing and as an accelerator in the concrete industry.

Supplier: Promega Corporation

Recombinant human MELK (1-340) was expressed by baculovirus in Sf9 insect cells using an N-terminal GST tag. MELK or maternal embryonic leucine zipper kinase is a member of the Snf1/AMPK kinase family.

Supplier: MP Biomedicals

Potassium phosphate is a reagent with high buffering capacity. It occurs in several forms: monobasic, dibasic and tribasic. Most pH neutral potassium phosphate buffer solutions consist of mixtures of the monobasic and dibasic forms to varying degrees, depending on the desired pH.

Supplier: 3M Healthcare

Filter cartridges made of two asymmetric polyethersulfone (PES) membrane layers with Advanced Pleat Technology in manufacturing LifeASSURE™ PDA Series Filter Cartridges, creating a filter that provides high throughput and fast flow. These filters have applications in pre-filtration and sterilizing filtration in the pharmaceutical, biological, and bioprocess industries where low protein binding is critical. PP end cap adapters, inner core and outer cage, membrane support layer. Polysulfone encapsulated adapter reinforcing ring (5 to 40" cartridge configurations only).

Supplier: MP Biomedicals

Polyethylene glycol (PEG) is a condensation polymer of ethylene oxide and water.
Polyethylene Glycol has been used in the precipitation of proteins, as a fusing agent in enhancing the effect of macrophages on hybridoma, in the separation and purification of biomolecules and in induction of cell hybridization.
PEG's are susceptible to oxidative degradation in the presence of air. Minimizing the exposure of PEG to elevated temperatures and/or exposure to oxygen, or addition of an antioxidant can limit the amount of degradation. PEGs do not hydrolyze or deteriorate upon storage. PEGs do not support the growth of molds.

Supplier: WORLD PRECISION INSTRUMENTS LLC

Micro friedman rongeurs are a surgical instrument often used in oral and maxillofacial surgery to remove small pieces of bone or tissue from hard-to-reach areas of the mouth and jaw. Micro Friedman Rongeurs are smaller, making them ideal for precise surgical procedures in tight spaces.

Supplier: REVVITY HEALTH SCIENCES, INC.

Revvity 226 blood collection device for general blood collection, excluding newborn screening - labeled for use in the USA.

Supplier: MilliporeSigma

The Aquastar® range is designed to provide reagents for the determination of water by Karl Fischer titration of a wide range of substrates and by a variety of methodologies. These include reagents for one- or two-component systems; combined coulometric reagents; solvents for oils and fats; reagents and solvents for determination of water in ketones and aldehydes. Calibration standards are also available.

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: BioFit

The 10-Seat Oval™ table seats 20 percent more people in the same space as a traditionally shaped table and aids in communication of seated users. With a 74 cm (29") surface height when deployed, it folds, rolls and stores easily, and a rugged medium density fiberboard (MDF) top and 14 guage steel frame construction provide reliable long-term use.

Supplier: Spectrum Chemical Mfg. Corp.

Calcium Lactate, Pentahydrate, USP, FCC, EP is a filler/diluent excipient.  

Supplier: MP Biomedicals

Murashige and Skoog Medium is widely used plant tissue culture growth medium. It has been proven effective in the culture of tissue derived from moncotyledons and dicotyledons. This medium, originally formulated to support tobacco callus, has been used to support callus initiation and growth, the growth of cells in suspension culture and the regeneration of shoots and plantlets from explants. More recently, it has been used for micropropagation of ornamental, vegetable and fruit plants in research and commercial enterprises.

Supplier: Invitrogen

The Thermo Scientific Imject Maleimide-Activated BSA Spin Kit contains stabilized, lyophilized Maleimide-Activated BSA (in PBS with stabilizer) and accessory components to easily prepare ready-to-use immunogens for immunization.

Supplier: Crescent Chemical

COLLAGENASE NB 4G PROVED GRADE 1G

Supplier: Ricca Chemical

BUFFER COPPER ACS GRADE COLORLESS 20L

Supplier: INNOVA CHEMICALS CA

POTASSIUM IODIDE ACS GRADE 10KG

Supplier: Crescent Chemical

COLLAGENASE NB 6 GMP GRADE POWDER 1G

Supplier: Spectrum Chemical Mfg. Corp.

AMMONIUM ACETATE HPLC GRADE 1KG

Supplier: Spectrum Chemical Mfg. Corp.

AMMONIUM ACETATE HPLC GRADE 250G

Supplier: GFS Chemicals

REAGENT SODIUM PEROXIDE ACS GRADE 500G

Supplier: MP Biomedicals

Arachidonic Acid is an essential fatty acid. Occurs in liver, brain, glandular organs, and depot fats of animals, in small amounts in human depot fats, and is a constituent of animal phosphatides.
Arachidonic Acid is a precursor in the biosynthesis of prostaglandins, thromboxanes, and leukotrienes. Arachidonic acid plays a key role in cellular regulation and is controlled through multiple interconnected pathways.
Arachidonic acid (AA) is an unsaturated ω6 fatty acid constituent of the phospholipids of cell membranes. Phospholipase A2 releases AA from the membrane phospholipids in response to inflammation. AA is subsequently metabolized to prostaglandins and thromboxanes by at least two cyclooxygenase (COX) isoforms, to leukotrienes and lipoxins by lipoxygenases, and to epoxyeicosatrienoic acids via cytochrome p450-catalyzed metabolism. AA and its metabolites play important roles in a variety of biological processes, including signal transduction, smooth muscle contraction, chemotaxis, cell proliferation and differentiation, and apoptosis. AA has been demonstrated to bind to the a subunit of G protein and inhibit the activity of Ras GTPase-activating proteins (GAPs). Cellular uptake of AA is energy dependent and involves protein-facilitated transport across the plasma membrane.
If ethanol is undesirable, arachidonic acid may be dissolved in acetonitrile, DMF, or DMSO. Simply evaporate the ethanol under a gentle stream of nitrogen (be certain not to evaporate the material to dryness) and redissolve the arachidonic acid in the solvent of choice.Just prior to use, make dilutions of the stock solution into aqueous buffer or isotonic saline to bring the arachidonic acid to the desired concentration. Ensure that the residual amount of organic solvent is insignificant, since organic solvents may have physiologic effects at low concentrations. A control using the solvent in the absence of the prostaglandin will address this potential variable. We do not recommend storing the aqueous solution for more than one day. It is difficult to obtain aqueous solutions of arachidonic acid directly. However, an organic solvent free solution of arachidonic acid can be prepared using concentrated basic buffers (pH > 8.0 and ionic strength not less than 0.1 M). Add 400 μL of cold buffer (0 °C) per mg of arachidonic acid and agitate vigorously and/or ultrasonicate.

Supplier: Berkshire

MicroPolx® 1900 is a knitted polyester/nylon microfiber sealed edge cleanroom wiper.