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N-Ethylmaleimide (NEM) is an organic compound that is derived from maleic acid. It contains the amide functional group , but more importantly it is an alkene that is reactive toward thiols and is commonly used to modify cysteine residues in proteins and peptides .
In chemistry, the molar mass (M) (sometimes called molecular weight or formula weight, but see related quantities for usage) of a chemical compound is defined as the ratio between the mass and the amount of substance (measured in moles) of any sample of the compound. [1] The molar mass is a bulk, not molecular, property of a substance.
C 5 H 5 N O 2: Molar mass: 111.100 g·mol −1 ... N-Methylmaleimide (NMM) is a naturally-occurring [citation needed] organic compound with the formula of C 5 H 5 NO 2.
The molecular mass and relative molecular mass are distinct from but related to the molar mass. The molar mass is defined as the mass of a given substance divided by the amount of the substance, and is expressed in grams per mol (g/mol). That makes the molar mass an average of many particles or molecules (potentially containing different ...
The mass average molar mass is calculated by ¯ = where N i is the number of molecules of molecular mass M i. The mass average molecular mass can be determined by static light scattering , small angle neutron scattering , X-ray scattering , and sedimentation velocity .
Historically, the mole was defined as the amount of substance in 12 grams of the carbon-12 isotope.As a consequence, the mass of one mole of a chemical compound, in grams, is numerically equal (for all practical purposes) to the mass of one molecule or formula unit of the compound, in daltons, and the molar mass of an isotope in grams per mole is approximately equal to the mass number ...
SYDNEY (Reuters) -The remaining five members of the "Bali Nine" Australian drug ring have returned from Indonesia after diplomatic efforts between the countries this month to strike a repatriation ...
Maleimide-mediated methodologies are among the most used in bioconjugation. [5] [6] Due to fast reactions and high selectivity towards cysteine residues in proteins, a large variety of maleimide heterobifunctional reagents are used for the preparation of targeted therapeutics, assemblies for studying proteins in their biological context, protein-based microarrays, or proteins immobilisation. [7]
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