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Reducing the Need for Animal Testing for Biological Reactivity in Polymer Characterization

This page provides an overview of USP , , and , compares bioreactivity testing, and describes the transition of our organization towards in vitro test methods.

Pressure-Temperature Calculator for Solvents

Use the calculator to determine the boiling point or pressure of solvents based on the Antoine Equation and see solvent attributes. View a list of products based on the solvent CAS number.

NHC-based Palladium Catalysts

In collaboration with Umicore AG and Co.,1 we are pleased to offer a series of robust Pd(II) and Pd(0) complexes employed as the linchpin in C–C bond forming reactions.

Please contact your local representative for additional help with your order, our products, and product selection.

3D Neurosphere Culture Media

3D neurosphere culture protocol to expand human U-87 MG glioblastoma cells in serum-free/xeno-free stem cell culture media. Explore over 350 PromoCell products on Sigma.com.

Photometric Determination of Iron in Beer

Rapid and easy analysis of iron in pale beer samples with 1,10-Phenanthroline using spectrophotometry, facilitated by the formation of a stable red complex.

Isotopic Labeling for NMR Spectroscopy of Biological Solids

Isotopic Labeling for NMR Spectroscopy of Biological Solids;

Louie Group – Professor Product Portal

Professor Louie's research focuses on the discovery and mechanistic understanding of new reactions catalyzed by transition metal complexes. She has developed a highly active Ni(0) catalyst that effectively mediates a variety of cycloaddition and isomerization reactions.

Sample Preparation for Chromatographic Purification

This page discusses various aspects of sample preparation for chromatographic purification.

LC/MS Analysis of Phospholipids in Milk on Asc

(soybean), ≥97%; L-α-Phosphatidylethanolamine from egg yolk, Type III, ≥97% (TLC), lyophilized powder; L-α-Phosphatidylcholine, from egg yolk, Type XVI-E, ≥99% (TLC), lyophilized powder; Sphingomyelin, from chicken egg yolk, ≥95%

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