Facet-search | Sigma-Aldrich

The Jamison group has developed a library of bench-stable phosphine-containing nickel(II) precatalysts that are converted into active catalysts in situ.

Cultivation of Shigella

Shigella spp. are predominantly connected to humans and are rarely isolated from other animals, with the exception of primates.

Copper in Cell Culture

Importance and uses of copper in serum-free eukaryotic, including hybridoma and Chinese Hamster Ovary (CHO), cell cultures

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Hopane Reference Standards for use as Petrochemical Biomarkers in Oil Field Remediation and Spill Analysis

We provide high-quality, relevant hopane reference standards to be used as biomarkers for petrochemical oil field remediation and spill analysis.

Reference Standards for Analyzing Polyphenol Catechins

Ultra-Pure MALDI Matrices

One of the most important aspects of our ultra-pure MALDI matrix substances is their ability to dissolve rapidly and completely; a brief vortex mixing is typically sufficient.

Resolving by Mass

Chiral Disulfonimides for Asymmetric Counteranion-directed Catalysis (ACDC)

Asymmetric counteranion-directed catalysis (ACDC) has a number of valuable applications in enantioselective synthesis.

Mild Mg – Halogen Exchange

Substantial progress has been made in magnesium–halogen exchange reactions used for the preparation of functionalized Grignard reagents containing sensitive moieties such as ester or cyano groups.

Palau’Chlor®: Easily and Selectively Functionalize Lead Compounds

Aryl chlorides are commonly used in cross-coupling reactions and can serve as key intermediates towards the synthesis of pharmaceutical drug candidates and natural products.

Asymmetric Transfer Hydrogenation

Sodium Triacetoxyborohydride

Sodium triacetoxyborohydride

Trichloroacetimidate Reagents

Trichloroacetimidates are also commonly employed as alcohol alkylation reagents, particularly when existing functionality is not acid sensitive.

Organic Azides and Azide Sources

Since the preparation of the first organic azide, phenyl azide, by Peter Griess in 1864 this energy-rich and versatile class of compounds has enjoyed considerable interest.

Williams' Medium E Formulation

McCoy's 5A Modified Media Formulation

Understanding and Optimizing PCR eBook Download

PCR success can vary greatly depending on sample prep, reagent purity, and experimental design. This eBook covers key factors in PCR optimization including:

Mass Spectrometry

What is Mass Spectrometry or MS? What is it used for and how does it work? Read this detailed article with diagrams and example graphs to understand how to use mass spec in your research.

GC Analysis of Permanent Gases and Light Hydrocarbons on Carboxen-1006 PLOT and a Packed Column (Carboxen® 1004)

Separation of Methane; Acetylene; Carbon monoxide; Water; Nitrogen; Carbon dioxide; Ethane; Ethylene

Passive (Diffusive) Sampling Overview

For faster sampling rates, shorter sampling times, greater sensitivity and higher capacity allowing longer sampling times, discover our range of radial devices.

Chiral Vicinal Diamines for Asymmetric Synthesis

Chiral vicinal diamines are of tremendous interest to the synthetic chemist as they are found in many chiral catalysts and pharmaceuticals.

BIOshell™ Glycan U/HPLC Columns

The BIOshell™ Glycan column is ideal for the separation and quantitation of isolated glycans using the HILIC method for accurate glycoprotein analysis.

NIOSH 9000

For NIOSH 9000this page lists applicable products and materials to do the application

HPLC Columns for Antibody and Large Protein Analysis

BIOshell™ IgG 1000 Å C4 columns are highly suited for the reversed phase separation of high molecular weight compounds such as monoclonal antibodies with molecular weight of 150 kDa.

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