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Esters are a class of compounds found widely in nature. Low molecular weight esters tend to have characteristic flavors and pleasant odors that are most often associated with essential oils, even though essential oils are a complex mixture.

In 1886, L. Knorr heated a mixture of alpha-nitroso ethyl acetoacetate and ethyl acetoacetate together in glacial acetic acid in the presence of zinc dust, forming a tetra-substituted pyrrole. Since then, the condensation of an alpha-amino ketone or alpha-amino-beta ketoester with an active...

Structure search Chem dex search Element search, Acids are molecules or ions that act as proton or hydrogen ion donors (Brønsted-Lowry acid) in non-aqueous solutions or can accept an electron pair in water (Lewis acid). Organic acids are typically weaker than inorganic acids.

Organic acids are organic compounds that possess acidic properties. They do not fully dissolve in water, which makes them weak acids. Various industries use organic acids for corrosion treatment and prevention because they are minimally reactive to mineral acids.

As compared with the aminocoumarin derivatives, the Cascade Blue® fluorophore shows less spectral overlap with fluorescein, an important advantage for multicolor applications. In addition, this reactive Cascade Blue® derivative has high absorptivity, is highly fluorescent and, unlike most dyes,...

In this experiment, we monitor changes occurring during the course of a simple reaction, the hydrolysis of acetic anhydride with heavy water (D2O) by a modified in situ reaction monitoring technique. We also take advantage of isotopic substitution to suppress an otherwise large proton signal in the...

Named after the German chemist Ernst Otto Beckmann, the Beckmann rearrangement involves the conversion of aldoximes and ketoximes to their corresponding amides under acidic conditions. The reaction is usually carried out under under termperatures greater than 130°C, and in the presence of a large...

In 1946, E.R.H. Jones and colleagues reported the synthesis of alkynyl ketones from their corresponding carbinols using chromic acid (chromic trioxide mixed with diluted sulfuric acid) without oxidizing their sensitive triple bond.

Explore IHC Products Overview of Immunohistochemistry, Introduction Chemical vs physical fixation Formaldehyde, glutaraldehyde, and other chemical fixatives Fixative formulations for specific applications, Fixation plays four critical roles in immunohistochemistry: The right fixation method requires...

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The purpose of this laboratory experiment is for students to learn how to use a Thermo Scientific picoSpin 45 MHz NMR spectrometer and interpret experimentally-acquired 1H NMR spectra. In this lab, students obtain the 1H NMR spectrum of an unknown organic liquid chosen from a variety of compounds...

Rhodium is one of the six elements in the platinum group, which consists of platinum, palladium, rhodium, osmium, iridium, and ruthenium. Often found with deposits of platinum and commonly obtained from the mining and refining of platinum, it is considered the rarest and most valuable precious...

Optimize your experiments to get the best results. We’ve compiled a detailed knowledge base of the top tips and tricks to meet your research needs., View the relevant questions below:, Browse our FAQ database for more information ›, Need more information?

Buffer 1: 10 mM PBS, pH 7.4 Buffer 2: 0.1 M NaHCO3, pH 9.6 Buffer 3: 10 m M PBS, pH 7.4 with TWEEN 20 Buffer 4: 0.1 M Citrate, pH 4.2 with 0.03% H2O2 Buffer 5: 50 mM Tris-buffered Saline, pH 7.5 Buffer 6: 0.1 M Amino-Methyl- Propanediol, pH 10.3 Buffer 7: 0.1 M Citrate-Phosphate, pH 5.0, with 0.

Alcohol is one of the leading drivers of harm worldwide. Its consequences affect both individuals and societies as a whole. Individuals causing the greatest part of this harm are those who are dependent on it.