49550 Results for: "Kolby+Schlenka&pageNo=8"

Supplier: Thermo Fisher Scientific

N-Cyclohexylhydroxylamine hydrochloride 98%

Supplier: Bel-Art Products, a Part of SP

These lightweight and corrosion-proof polypropylene plastic trays have rounded corners for easy cleaning and smooth, tapered sides for stacking.

Supplier: Thermo Fisher Scientific

cis-2,3-Epoxybutane ≥98%

Supplier: Merck

TETRAHYDROFURAN-3-CARBOXALDEHYDE, 98%,50 WT. % SOLUTION IN WATER 1 * 25 mL

Supplier: Thermo Fisher Scientific

1,3-Di-tert-butyltoluene ≥98%

Supplier: Abcam

Mouse monoclonal [58-217] to INCENP.

Supplier: Thermo Fisher Scientific

Bromotrimethylsilane 98%

Supplier: Aesculap

Micro spatulas for application of the retrograde filling material (Super EBA) into the dental cavity.

Supplier: DWK Life Sciences

LDPE, translucent.

Supplier: Merck

BIS-(2,2,2-TRICHLOROETHYL) PHOSPHORO-CHL ORIDATE, 98% 1 * 50 g

Supplier: Thermo Fisher Scientific

(R)-(-)-2-Amino-1-propanol 98%

Supplier: Lovibond

A wide range of test discs containing a series of graded glass filters, which have been pre-calibrated to give direct test readings. The unique feature of Lovibond® test discs is that they incorporate coloured glass filters which are colour stable and not affected by UV light or extreme environmental conditions.

Supplier: Merck

ISOVALERONITRILE, 98% 1 * 25 g

Supplier: Thermo Fisher Scientific

Surfact-Amps™ detergents are ready-to-use, diluted solutions of purified detergent that can be used in routine and high-demand protein research methods and molecular biology techniques. These detergents are useful as a component of cell lysis buffers or other solutions intended to extract and solubilise proteins, improve chromatography, prepare yeast spheroplasts, and reduce background in ELISA or Western blot methods.

Supplier: Thermo Fisher Scientific

4,5-Dicyanoimidazole ≥98%

Supplier: Thermo Fisher Scientific

Barium peroxide, anhydrous ≥84%, Technical Grade

Supplier: DWK Life Sciences

Manufactured from USP Type I borosilicate glass, with large writing patch.

Supplier: Biotium

5(6)-ROX (full name: 5-(and-6)-Carboxy-X-rhodamine, triethylammonium salt (mixed isomers)) is a long wavelength rhodamine dye.

Supplier: Biotium

5-ROX (full name: 5-Carboxy-X-rhodamine, triethylammonium salt, single isomer) is a single isomer, long wavelength rhodamine dye.

Supplier: Biotium

Full name: 6-Carboxytetramethylrhodamine succinimidyl ester single isomer. Amine-reactive form ofcarboxytetramethylrhodamine (TAMRA) single isomer.

Supplier: Thermo Fisher Scientific

Acetaldehyde ammonia trimer 98%

Supplier: Thermo Fisher Scientific

o-Tolyl isocyanate ≥98%

Supplier: DWK Life Sciences

Made of Type I borosilicate glass.

Supplier: Thermo Fisher Scientific

Methyl-2-amino-4-chlorobenzoate 98%

Supplier: Honeywell Chemicals

Hexane (mixture of isomers) ≥85% (isomers basis, GC), Puriss.

Supplier: Merck

Rubidium-Rb solution 1 * 5 mL

Supplier: Molekula

18-Crown-6 (1,4,7,10,13,16-hexaoxacyclooctadecane)

Supplier: Merck

ANTI-MYOSIN V (LF-18), DEVELOPED*IN RABBIT, AFFINIT 1 * 0,2 mL

Supplier: LGC Standards PROMOCHEM

2,4,5-TRICHLOROPHENOL (RING-D2, 98%) 1 * 100 mg

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