HPTLC–MS analysis of quinine in tonic water and caffeine in coffee and cola drinks. Tonic and cola drinks decarbonized through ultrasonication, and coffee extracted through PTFE filter.

Enzymatic Assay of Plasmin with D-Val-Leu-Lys-p-Nitroanilide Dihydrochloride

Flavors and Fragrances New Product Offerings

As a leading global supplier of new flavor and fragrance ingredients, we are dedicated to providing you with high-quality aroma chemicals comprising of certified food grade, IFRA, natural, kosher, and halal ingredients.

Escort™ IV Transfection Reagent Protocol

Product manual provides detailed protocol for easy DNA transfection.

Cultrex^® 3-D Culture Matrix™ Laminin I Protocol

3-D Culture Matrix™ Mouse Laminin I may be used as a gel or as a media additive to study cellular growth and differentiation in three dimensions in vitro.

In Vitro Expansion of CD34+/CD38- Human Hematopoietic Progenitor Cells in a Serum-free and Xeno-free Stem Cell Culture Media

In vitro culture of human hematopoietic stem cells in PromoCell’s serum-free/xeno-free HPC Expansion Medium DXF. Explore over 350 PromoCell products

Mass Spectrometry of Glycans

The development of modern mass spectrometry (MS) equipment with high resolution and mass accuracy has led to its use in analyzing glycans for both profiling and structural studies.

Guanylation of Amines by Bis(tert-butoxycarbonyl)thiopseudourea, Polymer-Bound

1 Introduction of a guanidinyl group can be achieved by the reaction of substituted amines with various guanylation reagents.2,3,4 One such guanylating reagent is bis(tert-butoxycarbonyl)thiopseudourea, polymer-bound.

Methods for Enhancing Lentiviral Transduction Efficiency

An experiment to directly compare three methods of lentiviral transduction of Jurkat cells was conducted in order to determine the method that yields the greatest transduction efficiency.

Molecular Solar Thermal Energy Storage Systems (MOST) – Design, Synthesis, and Application

The substantial rise in global population has triggered a significant surge in the demand for energy worldwide, amplifying the need for renewable energy sources and improved energy storage. Molecular thermal energy storage (MOST) is a promising, highly controlled technique for

Calcitonin Gene-Related Peptides

Sigma-Aldrich offers many products related to calcitonin gene-related peptides for your research needs.

Periodic Table of the Elements

Download the Periodic Table of the Elements with names, atomic mass and number in printable .pdf and image format. Use the periodic table chart by element names in alphabetical order for quick research, reference and lab use.

Boc Resin Cleavage and Deprotection

The most popular reagent for cleavage of peptides from Boc-based resins is anhydrous HF. Of all the cleavage procedures HF appears to be the most versatile and least harmful to a wide variety of peptides synthesized on Boc-based resins.

GPCR Markers for Cancer Research

Explore the role of some selected GPCR markers in cancer research development and treatment, including neurohormonal GPCRs, rhodopsin-like GPCRs, and more.

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