1183 Results for: "Urea"
Urea 99.0-100.5% USP
Supplier: AVANTOR PERFORMANCE MATERIALS US
Urea 99.0-100.5% USP
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Urea 99.0-100.5%, crystallised ACS, VWR Chemicals BDH®
Supplier: VWR International
Urea 99.0-100.5%, crystallised ACS, VWR Chemicals BDH®
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Urea ≥99.5%, Ultrapure for molecular biology
Supplier: Thermo Scientific Chemicals
Urea ≥99.5%, Ultrapure for molecular biology
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Urea
Supplier: Promega Corporation
Urea is a protein denaturant. Urea is qualified for use as the denaturing component in polyacrylamide gels.
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Urea, Proteomics Grade
Supplier: VWR
Commonly used to denature nucleic acids for electrophoresis and to study the secondary and tertiary structure of proteins. Effective for maintaining DNA in a highly denatured state during sequencing protocols, urea is also useful for accelerating the acti
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Urea, high purity
Supplier: VWR
Commonly used to denature nucleic acids for electrophoresis and to study the secondary and tertiary structure of proteins. Effective for maintaining DNA in a highly denatured state during sequencing protocols, urea is also useful for accelerating the activity of Proteinase K digestions. Effectively denatures RNA. For use in nucleic electrophoresis applications.
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Urea ≥99.5%, Ultrapure Bioreagent
Supplier: AVANTOR PERFORMANCE MATERIALS US
For protein solubilization and denaturation. DNase-, RNase-, protease-, and cyanate-free.
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Urea ≥99% USP, JP
Supplier: Spectrum Chemical Mfg. Corp.
Urea, USP, JP is used in topical dermatological products to promote rehydration of the skin. Urea preparations are also used for non-surgical removal of damaged or dead nails. All Spectrum Chemical USP, JP products are manufactured, packaged and stored under current Good Manufacturing Practices (cGMP) per 21CFR part 211 in FDA registered and inspected facilities
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Urea 98+%
Supplier: Thermo Scientific Chemicals
Used as a protein denaturant
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Urea ≥99.3%, REacton®
Supplier: Thermo Scientific Chemicals
MDL: MFCD00008022 Beilstein Registry No.: 635724 Fieser: 1,1262 2,455
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Urea ≥99.0% FCC
Supplier: Spectrum Chemical Mfg. Corp.
Urea, FCC is a component of animal feed, providing a relatively cheap source of nitrogen to promote growth. The FCC grade meets the requirements of the Food Chemical Codex indicates and is suitable for all food, beverage, nutritional supplements and personal care applications. Spectrum Chemical offers over 300 Food grade chemical ingredients packaged in laboratory size bottles to production drum quantities and are manufactured, packaged and stored under current Good Manufacturing Practices (cGMP) per 21CFR part 211 in FDA registered and inspected facilities.
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Urea
Supplier: MilliporeSigma
(Carbimide; carbonyl diamide). White solid. PROTECT FROM MOISTURE. End product of the urea cycle. A topical keratolytic agent. Soluble in H2O. RTECS YR6250000, CAS 57-13-6, M.W. 60.1. WARNING! May be carcinogenic/teratogenic.
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Urea, Pierce™
Supplier: Invitrogen
Thermo Scientific Pierce Urea is ≥99% pure, crystalline urea, a protein denaturant with low UV absorptivity. In addition to increasing solubility of hydrophobic molecules, urea is a general protein denaturant, unfolding proteins and altering their three-dimensional structures.
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Urea ≥98%
Supplier: BeanTown Chemical
CAS: 57-13-6; EC No: 200-315-5; MDL No: MFCD00008022; RTECS: YR6250000 Solid; Linear Formula: NH2CONH2; MW: 60.06 Melting Point: 132-135° Density (g/mL): 1.335
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Urea ≥99.5%, OmniPur®, Millipore®
Supplier: MilliporeSigma
Ideal for protein unfolding/denaturation.
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Urea 98.0-102% USP, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIALS US
Crystals. GMP manufactured.
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Urea 99.0-100.5% ACS
Supplier: BeanTown Chemical
CAS: 57-13-6; EC No: 200-315-5; MDL No: MFCD00008022; RTECS: YR6250000 Crystalline; Linear Formula: NH2CONH2; MW: 60.06 Melting Point: 132-135° Density (g/mL): 1.335
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Urea 99.0-100.5%, REacton® ACS
Supplier: Thermo Scientific Chemicals
Used as a protein denaturant
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Urea for synthesis, Sigma-Aldrich®
Supplier: MilliporeSigma
Urea for synthesis, Sigma-Aldrich®
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Urea, BiotechGrade
Supplier: Spectrum Chemical Mfg. Corp.
Urea, BiotechGrade is an odorless and colorless solid that is an important nitrogen-containing substance found in mammal urine. In concentrations up to 10 M, urea is a powerful protein denaturant as it disrupts the noncovalent bonds in the proteins. This property can be exploited to increase the solubility of some proteins. Spectrum offers highly pure reagents suitable for biochemical research and analysis. The critical parameters involved are absence of inhibitors such as traces of heavy metals as well as biochemical function tests for enzymes, coenzymes and enzyme substrates.
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Urea 99.0-100.5%, crystals, AR® ACS, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIALS US
Crystals.
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Urea ≥99.5%, BAKER ANANYZED™ ACS
Supplier: AVANTOR PERFORMANCE MATERIALS US
Lot analysis on label.
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Urea 98.0-102.0% USP, Multi-Compendial
Supplier: AVANTOR PERFORMANCE MATERIALS US
Meets USP requirements. Meets BP/Ph. Eur. and JP chemical specifications. GMP manufactured product.
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Urea ≥99%, white prills, Ultrapure
Supplier: MP Biomedicals
Urea is the principal end product of nitrogen metabolism in most mammals, formed by the enzymatic reactions of the Kreb's cycle.
Urea is a mild agent usually used in the solubilization and denaturation of proteins. It is also useful for renaturing proteins from samples already denatured with 6 M guanidine hydrochloride 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. 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; used as a diuretic; enhances the action of sulfonamides; an antiseptic.
Urea in solution is in equilibrium with ammonium cyanate. The form that reacts with protein amino groups is isocyanic acid. Urea in the presence of heat and protein leads to carbamylation of the proteins. Carbamylation by isocyanic acid interferes with protein characterization because isocyanic acid reacts with the amino terminus of proteins, preventing N-terminal sequencing. Isocyanic acid also reacts with side chains of lysine and arginine residues resulting in a protein that is unsuitable for many enzymatic digests. In addition, carbamylation often leads to confusing results from peptides having unexpected retention times and masses. When performing enzymatic protein digests it is important to remove urea first. Even though some enzymes will tolerate small amounts of urea, the elevated temperature used for most reactions will lead to carbamylation during the course of the digest. The urea can be removed prior to digestion by fast reversed phase chromatography, spin columns, or dialysis.
Dissolve urea in deionized water to the desired concentration.For every 10 ml of solution, add 1 g of Amberlite® IRA-910.Stir for one hour at room temperature
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Urea, white prills, Reagent Grade
Supplier: MP Biomedicals
Urea is a prinicipal protein metabolite end product of nitrogen metabolism in most mammals, formed by the enzymatic reactions of the Kreb's cycle and the major product for the removal of free ammonia (NH4+) in vivo.