203 Results for: "Ammonium Hydroxide"

Supplier: Thermo Fisher Scientific

Excellent for industry and field

Supplier: Electron Microscopy Sciences

Na2CO3 F.W. 105.99 CAS 497-19-8

Supplier: MP Biomedicals

Soluble in ethanol, alkali hydroxides, borax (0.8 mg/ mL), ammonium hydroxide (1 mg/mL), water (8 mg/mL) or ethanol (0.8 mg/mL). The addition of an acid or base can help increase the water solubility. Partly soluble in hot water; practically insoluble in cold water (8 mg/ mL) or dilute acids.

Supplier: Spectrum Chemical Mfg. Corp.

Tetramethylammonium Hydroxide, Pentahydrate, also known as TMAH, is a quaternary ammonium salt that is used for the anisotropic etching of silicon and as a quaternary amine catalyst in organic synthesis. Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use. These materials may or may not have a Certificate of Analysis available.

Supplier: AAT BIOQUEST INC

There are several ways of labeling an oligonucleotide with fluorescein. The choice of label is diversified further, depending on the spectral requirements. 5'-fluorescein-CE phosphoramidite, derived from the single isomer 6-carboxyfluorescein, 5'-hexachlorofluorescein-CE phosphoramidite (HEX) and 5'-tetrachlorofluorescein-CE phosphoramidite (TET) can all be used to efficiently label an oligonucleotide at the 5'-end. Labeling the 3'-end of an oligo with fluorescein can be achieved using 3'-Fluorescein CPGs. Standard cleavage and deprotection with ammonium hydroxide liberates the fluorescein-labeled oligo when using any of these supports.

Supplier: MP Biomedicals

Dissolve the peptide in distilled, oxygen free water (oxygen free water is recommended to help prevent oxidation of the Cys groups). The concentration should be high enough to allow for addition of buffer after the product is dissolved completely. If necessary, a few drops of dilute acetic acid or ammonium hydroxide can be added to help solubilize the peptide. Brief sonication can also help in solubilization. Buffer or saline should be added only after the peptide is fully in solution. Solutions should be kept slightly basic to avoid degradation. Long term storage of solutions is not recommended.

Supplier: MP Biomedicals

A vitamin/enzyme cofactor found in milk, eggs, malted barley, liver, kidney, heart, leafy vegetables. Richest natural source is yeast. Occurs in the free form only in the retina of the eye, in whey, and in urine; bioactive forms occurring in tissues and cells are riboflavin monophosphate and flavine-adenine dinucleotide. Used as a photoinitiator for polymerization of polyacrylamide gels. It forms free radicals in aqueous solution in the presence of light. Riboflavin photodecomposes to leucoflavin. No free radicals are formed in the absence of oxygen but traces of oxygen allows for leucoflavin to reoxidize with free-radical generation. The catalysts TEMED or DMAPN are commonly added to speed up the free radical formation. The free radicals will cause acrylamide and bis-acrylamide to polymerize to form a gel matrix which can be used for electrophoresis. Riboflavin is commonly used in the stacking gel for non-denaturing polyacrylamide electrophoresis because native proteins can be senstive to persulfate ions from ammonium persulfate. Another advantage of riboflavin over ammonium persulfate is that it will not start polymerization until the gel is illuminated. Riboflavin causes less denaturing than other initiators. Gel strength can be improved when used with PTO (Pyrithione). Soluble in 0.1 M Sodium Hydroxide (50 mg/ml - clear, yellowish-orange solution); only slightly soluble in water.

Supplier: MP Biomedicals

Storage: +4 °C
D-Biotin is a growth factor present in small amounts in every living cell. It is involved in naturally occurring carboxylation reactions. It occurs mainly bound to proteins or polypeptides. It is more abundant in the liver, kidney, pancreas, yeast and milk. Biotin levels are higher in cancerous tumors than in normal tissues. It is inactivated by binding to avidin.
D-Biotin may be used to elute proteins from avidin/streptavidin resins. It is widely used for dietary supplements and fortified foods. It is also used for tablets and hard-shell capsule preparation due to its pharmaceutical properties.
Essential vitamin that is important for amino acid and energy metabolism, and fatty acid synthesis. It is a prosthetic group in four mammalian carboxylase families and facilitates the binding and transfer of carbon dioxide.
Soluble in water (22 mg/100 mL), ethanol (80 mg/100 mL), more soluble in hot water and in dilute alkalies; insoluble in other common organic solvents. Soluble in 2 M Ammonium hydroxide (50 mg/mL - clear, colorless solution), dimethylformamide (1.7 mg/mL).

Supplier: VWR International

41.4% (v/v) in water. Suitable as a titrant.

Supplier: BDH

Clear and free from particulates.

Supplier: VWR International

Suitable as a titrant

Supplier: AVANTOR PERFORMANCE MATERIALS US

Ammonia solution 29%, Finyte®

Supplier: AVANTOR PERFORMANCE MATERIALS US

Ammonia solution 14%

Supplier: AVANTOR PERFORMANCE MATERIALS US

Ammonia (25 - 35%) 28,0-30,0% (NH₃ basis), CMOS for microelectronic, J.T.Baker®

Supplier: AVANTOR PERFORMANCE MATERIALS US

Ammonia solution 29%, CMOS for microelectronic, J.T.Baker®

Supplier: AVANTOR PERFORMANCE MATERIALS US

Ammonia solution 28,0 - 30,0% VLSI, VLSI® for the electronics industry, J.T.Baker®

Supplier: AVANTOR PERFORMANCE MATERIALS US

Ammonia solution 5 N, BAKER ANALYZED® volumetric solution, J.T.Baker®

Supplier: AVANTOR PERFORMANCE MATERIALS US

For trace metals analysis, ICP, environmental, pharmaceutical and low metals.

Supplier: BDH

Ultra high purity solution for quantitative trace metal analysis at the parts-per-trillion (ppt) level.

Supplier: AVANTOR PERFORMANCE MATERIALS US

ACS—Reagents meeting the requirements of the American Chemical Society Committee on Analytical Reagents. The specifications listed in this catalog are based on the ACS Reagent Chemicals Tenth Edition.  

Supplier: AVANTOR PERFORMANCE MATERIALS US

pH adjusters are used to adjust the pH of formulations. This category includes acids that are notoriously difficult to source as truly cGMP-produced and amino acids that most companies do not fully test for EP, BP and JP. Avantor provides all that and more.

Supplier: MilliporeSigma

Supplier: Thermo Scientific Chemicals

Ammonia solution 20% in water for analysis

Supplier: MilliporeSigma

Ammonia solution 28,0 - 30,0%, GR ACS, Supelco®

Supplier: AVANTOR PERFORMANCE MATERIALS US

pH adjusters are used to adjust the pH of formulations. This category includes acids that are notoriously difficult to source as truly cGMP-produced and amino acids that most companies do not fully test for EP, BP and JP. Avantor provides all that and more with our cGMP-produced acids and mutli-compendial amino acids.

Supplier: MilliporeSigma

Supplier: Thermo Scientific Chemicals

Ammonia solution 10% (w/w) in water, extra pure

Supplier: Thermo Scientific Chemicals

Ammonia solution 5% (w/w) in water, extra pure

Supplier: Thermo Scientific Chemicals

Ammonia solution 28 - 30% (w/w) in water for analysis

Supplier: Ambeed

N-Hexadecyl-N,N-dimethyl-3-ammonio-1-propanesulphonate (Sulfobetaine-16, SB-16) 97%