Anagrammes & Informations sur | Mot Anglaise AMINES

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Exemples d’utilisation de AMINES dans une phrase

• The chemical notation for amines contain the letter "R", where "R" is not an element, but a "R-group" which means "rest of the molecule" and in amines could be a single hydrogen or carbon atom, or could be a hydrocarbon chain.
• He highlighted these "vital amines" (or "vitamines") as critical in fighting significant diseases such as pellagra and rickets, and his analysis influenced a major shift in scientific thinking.
• At room temperature, UDMH is a colorless liquid, with a sharp, fishy, ammonia-like smell typical of organic amines.
• Epoxy resins may be reacted (cross-linked) either with themselves through catalytic homopolymerisation, or with a wide range of co-reactants including polyfunctional amines, acids (and acid anhydrides), phenols, alcohols and thiols (sometimes called mercaptans).
• In this case, halogens are going to be the best leaving groups, while compounds such as amines, hydrogen, and alkanes are going to be quite poor leaving groups.
• Benzphetamine is contraindicated in patients with advanced arteriosclerosis, symptomatic cardiovascular disease, moderate to severe hypertension, hyperthyroidism, known hypersensitivity or idiosyncrasy to sympathomimetic amines, and glaucoma, or who have recently used a monoamine oxidase inhibitor (MAOI).
• Stabilizers comprise up to 8% of the formulation, including acid scavengers (epoxides, amines) and complexants.
• Since August 2012, the new standard EN 14362-1:2012 Textiles - Methods for determination of certain aromatic amines derived from azo colorants - Part 1: Detection of the use of certain azo colorants accessible with and without extracting the fibres is effective.
• For example, it convert amines into isocyanates, secondary amines into carbamoyl chlorides, carboxylic acids into acid chlorides, and formamides into isocyanides.
• It is a reagent for conversion of amines into diazo compounds, which are key precursors to many dyes, such as diazo dyes.
• The characteristic constituents are biogenic amines (mostly tyramine in the young shoots), flavonoids (spiraeoside and scoparoside), isoflavones and their glycosides (genistin), as well as allelopathic quinolizidine alkaloids (mostly sparteine, lupanine, scoparin and hydroxy-derivatives), which defend the plant against insect infestation and herbivores (with the exception of the resistant aphid species Aphis cytisorum).
• In these subcellular structures, amino acid precursors to certain hormones are accumulated and subsequently decarboxylated to the corresponding amines, for example epinephrine, norepinephrine, dopamine or serotonin.
• Oxatriquinane does not react with boiling water or with alcohols, thiols, halide ions, or amines, although it does react with stronger nucleophiles such as hydroxide, cyanide, and azide.
• Derivatives of amine containing sugars, such as N-acetylglucosamine and sialic acid, whose nitrogens are part of more complex functional groups rather than formally being amines, are also considered amino sugars.
• Biogenic amines are organic bases with low molecular weight and are synthesized by microbial, vegetable and animal metabolisms.
• Potent genotoxins usually found in domestic wastes also include N-nitroso compounds and aromatic amines, which are known to be present in human sanitary outflows as well as genotoxic PAHs found in municipal discharges.
• All react with amines to form amides and with alcohols to form esters by nucleophilic acyl substitution.
• Converting amines into their hydrochlorides is a common way to improve their water solubility, which can be desirable for substances used in medications.
• Ninhydrin is most commonly used to detect fingerprints in forensic cases, as the terminal amines of lysine residues in peptides and proteins sloughed off in fingerprints react with ninhydrin.
• A humectant is often a molecule with several hydrophilic groups, most often hydroxyl groups; however, amines and carboxyl groups, sometimes esterified, can be encountered as well (its affinity to form hydrogen bonds with molecules of water is the crucial trait).

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