TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A crystalline feeble heterocyclic base... isomeric with imidazole obtained usually by the action of acetylene on diazomethane.  2, record 1, English, - pyrazole

Record number: 1, Textual support number: 1 OBS

Chemical formula: C₃H₄N₂ or C₃H₃N₂H  3, record 1, English, - pyrazole

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 OBS

Formule chimique : C₃H₄N₂ ou C₃H₃N₂H  2, record 1, French, - pyrazol

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 OBS

Fórmula química : C₃H₄N₂ o C₃H₃N₂H  2, record 1, Spanish, - pirazol

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

An off-white to pale yellow heterocyclic organic compound formed by replacing the hydrogen in position 4(or 5) of imidazole by a methyl group.  5, record 2, English, - 4%2Dmethylimidazole

Record number: 2, Textual support number: 1 CONT

4-methylimidazole (4-MEI) is a compound used to make certain pharmaceuticals, photographic chemicals, dyes and pigments, cleaning and agricultural chemicals, and rubber products. 4-MEI is formed during the production of certain caramel coloring agents used in many food and drink products. It may also be formed during the cooking, roasting, or other processing of some foods and beverages. ... Studies published in 2007 by the [U.S.] federal government’s National Toxicology Program showed that long-term exposure to 4-MEI resulted in increases in lung cancer in male and female mice. These findings were the basis for the addition of 4-MEI to California’s Proposition 65 list of carcinogens.  6, record 2, English, - 4%2Dmethylimidazole

Record number: 2, Textual support number: 2 CONT

2-methylimidazole and 4-methylimidazole are intermediate/starting materials or components in the manufacture of pharmaceuticals, photographic and photothermographic chemicals, dyes and pigments, agricultural chemicals, and rubber. These chemicals have been identified as undesirable by-products in several foods and have been detected in mainstream and sidestream tobacco smoke. The National Cancer Institute nominated 2- and 4-methylimidazole as candidates for toxicity and carcinogenicity studies. Toxicity studies were carried out in male and female F344/N rats and ...  7, record 2, English, - 4%2Dmethylimidazole

Record number: 2, Textual support number: 3 CONT

Concern has arisen about the presence of 4-MEI in caramel color (which is the most-used food and beverage coloring) ... Dark beers and common brands of cola drinks may contain ...  2, record 2, English, - 4%2Dmethylimidazole

Record number: 2, Textual support number: 4 CONT

... Since imidazole also exists in tautomeric forms, either of the nitrogen atoms can bear the hydrogen atom, the two nitrogens become indistinguishable and the numbering becomes rather complex for mono-substituted imidazoles. As a consequence of this, 4-methylimidazole is identical with 5-methylimidazole and, depending on the position of the imino hydrogen, such a compound may be designated either 4-or 5-methylimidazole. As only one substance that may be a single tautomer or an equilibrium mixture is known, it would be incorrect to call it eithier 4-or 5-methylimidazole. Such a compound is instead designated as 4(5)-methylimidazole.  8, record 2, English, - 4%2Dmethylimidazole

Record number: 2, Textual support number: 1 OBS

4(5)-methylimidazole; 4(or 5)-methylimidazole; 5-methylimidazole; 5-methyl-1H-imidazole : 4-methylimidazole and 5-methylimidazole are tautomers(structural isomers that are readily interconvertible) and are therefore usually considered to be synonymous(i. e. considered to be the same chemical compound). They have the same molecular formula and CAS Registry Number(CAS : Chemical Abstracts Service).  5, record 2, English, - 4%2Dmethylimidazole

Record number: 2, Textual support number: 2 OBS

Chemical formulas: C₄H₆N₂ or H₃C-C₃H₃N₂  5, record 2, English, - 4%2Dmethylimidazole

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Composé chimique hétérocyclique de couleur blanc cassé à jaune pâle, formé en remplaçant l'hydrogène en position 4 (ou 5) de l'imidazole par un groupe méthyle.  4, record 2, French, - 4%2Dm%C3%A9thylimidazole

Record number: 2, Textual support number: 1 OBS

Considéré comme étant probablement cancérigène, on retrouve ce produit lors de la fabrication de colorants caramel présents dans beaucoup d'aliments et de boissons (p. ex. boissons à base de cola, bières brunes) et à la suite du rôtissage d'aliments (p. ex. café et viande).  4, record 2, French, - 4%2Dm%C3%A9thylimidazole

Record number: 2, Textual support number: 2 OBS

Il sert à fabriquer des produits pharmaceutiques, des produits pour le nettoyage, des produits utilisés en photographie et en agriculture, des teintures et des pigments, et des produits à base de caoutchouc.  4, record 2, French, - 4%2Dm%C3%A9thylimidazole

Record number: 2, Textual support number: 3 OBS

4(ou 5)-méthylimidazole; 5-méthyl-1H-imidazole; 5-méthylimidazole : Le 4-méthylimidazole et le 5-méthylimidazole sont des tautomères (isomères interconvertibles) et sont donc souvent considérés comme étant le même composé chimique.  4, record 2, French, - 4%2Dm%C3%A9thylimidazole

Record number: 2, Textual support number: 4 OBS

méthyl-4 iminazole : «Imidazole» s'écrit également «iminazole».  5, record 2, French, - 4%2Dm%C3%A9thylimidazole

Record number: 2, Textual support number: 5 OBS

Formules chimiques : C₄H₆N₂ ou H₃C-C₃H₃N₂ ou CH₃-C₃H₃N₂  4, record 2, French, - 4%2Dm%C3%A9thylimidazole

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

Any of the derivatives of imidazole, a colourless, crystalline, heterocyclic compound consisting of the five-membered ring NHyCHzCHzCH.  3, record 3, English, - imidazole%20derivative

Record number: 3, Textual support number: 1 OBS

imidazole : This word is used to designate both the compound and the derivatives of the compound.  3, record 3, English, - imidazole%20derivative

Record number: 3, Textual support number: 1 CONT

Derivatives obtained by displacing a CH group in these by N are designated imidazole=C₃H₃(NH) N, oxazole=C₃H₃(O) N, and thiazole=C₃H₃(S) N respectively.  4, record 3, English, - imidazole%20derivative

Record number: 3, Textual support number: 2 CONT

Certain imidazole derivatives... exert actions similar in some respects to the sympathetic amines.  4, record 3, English, - imidazole%20derivative

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

L'imidazole est un hétérocycle très fréquemment rencontré dans les composés naturels, soit sous forme monocyclique (histidine), soit sous forme polycyclique (purines, benzimidazoles). Les hydantoïnes, qui ont des emplois comme hypnotiques, sont aussi des dérivés de l'imidazole. Toute une série de médicaments antifongiques utilisés par voie locale dans le traitement des mycoses cutanées sont des dérivés de l'imidazole.  3, record 3, French, - d%C3%A9riv%C3%A9%20de%20l%27imidazole

Record number: 3, Textual support number: 1 OBS

imidazoline : terme générique désuet pour désigner les dérivés dihydrogénés de l'imidazole, par exemple 2,5-dihydroimidazole.  4, record 3, French, - d%C3%A9riv%C3%A9%20de%20l%27imidazole

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

A manufactured fiber in which the fiber-forming substance is a long chain aromatic polymer having recurrent imidazole groups as an integral part of the polymer chain.  1, record 4, English, - polybenzimidazole%20fiber

Record number: 4, Textual support number: 1 OBS

The polymer is made from tetraaminobiphenyl and diphenyl isophthalate and is spun from a dope with dimethylacetamide as the solvent. Characteristics: A high-performance fiber with high chemical resistance that does not burn in air ... The fiber and fabrics from PBI retain their flexibility, dimensional stability ... PBI is a good fiber for many critical uses ...  1, record 4, English, - polybenzimidazole%20fiber

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Fibre manufacturée dans laquelle la substance fibrogène est une longue chaîne de polymère aromatique ayant des groupes imidazole répétitifs qui font partie intégrante de la chaîne polymérique.  3, record 4, French, - fibre%20de%20polybenzimidazole

Record number: 4, Textual support number: 1 OBS

Le polymère, qui est obtenu à partir du tétraaminobiphényle et du isophtalate de diphényle, est filé à sec à partir de la dope en présence du diméthylacétamide comme solvant.  3, record 4, French, - fibre%20de%20polybenzimidazole

Record number: 4, Textual support number: 1 CONT

Les fibres PBI (polybenzimidazole) ne brûlent pas à l'air libre. Les tissus à base de PBI sont incombustibles [...]. De plus, les fibres et les tissus PBI présentent une résistance élevée à la rupture, à l'arrachement et la corrosion chimique [...]. PBI a fait ses preuves dans les applications suivantes: vestes de protection, vêtements de travail, gants, vêtements aluminisés, oreillettes de casques, triplure de vêtements.  4, record 4, French, - fibre%20de%20polybenzimidazole

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

A colourless, crystalline, heterocyclic compound consisting of the five-membered ring NHyCHzNyCHzCH.  4, record 5, English, - imidazole

Record number: 5, Textual support number: 1 OBS

imidazole : form recommended by the IUPAC(International Union of Pure and Applied Chemistry).  5, record 5, English, - imidazole

Record number: 5, Textual support number: 2 OBS

imidazole :[Also used to designate] any of the derivatives of this compound.  4, record 5, English, - imidazole

Record number: 5, Textual support number: 3 OBS

N,N’-vinyleneformamidine: The capital letters "N" must be italicized.  6, record 5, English, - imidazole

Record number: 5, Textual support number: 4 OBS

Also known under a large number of commercial designations, such as: Imutex; Miazole; USAF EK-4733.  6, record 5, English, - imidazole

Record number: 5, Textual support number: 5 OBS

Chemical formula: C₃H₄N₂  6, record 5, English, - imidazole

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Composé hétérocyclique aromatique [...]  4, record 5, French, - imidazole

Record number: 5, Textual support number: 1 CONT

L'imidazole est un hétérocycle très fréquemment rencontré dans les composés naturels, soit sous forme monocyclique (histidine), soit sous forme polycyclique (purines, benzimidazoles). Les hydantoïnes, qui ont des emplois comme hypnotiques, sont aussi des dérivés de l'imidazole. Toute une série de médicaments antifongiques utilisés par voie locale dans le traitement des mycoses cutanées sont des dérivés de l'imidazole.  4, record 5, French, - imidazole

Record number: 5, Textual support number: 1 OBS

imidazole : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée).  2, record 5, French, - imidazole

Record number: 5, Textual support number: 2 OBS

Formule chimique : C₃H₄N₂  5, record 5, French, - imidazole

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

An imidazole antifungal agent that is used topically and by intravenous infusion.  2, record 6, English, - miconazole

Record number: 6, Textual support number: 1 OBS

Chemical formula: C₁₈H₁₄Cl₄N₂O  3, record 6, English, - miconazole

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 OBS

Formule chimique : C₁₈H₁₄Cl₄N₂O  2, record 6, French, - miconazole

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 OBS

Fungicide.  3, record 7, English, - %28RS%29%2D1%2D%28%C3%9F%2Dallyloxy%2D2%2C%204%2Ddichlorophenethyl%29%20imidazole

Record number: 7, Textual support number: 2 OBS

RS: These capital letters must be italicized.  3, record 7, English, - %28RS%29%2D1%2D%28%C3%9F%2Dallyloxy%2D2%2C%204%2Ddichlorophenethyl%29%20imidazole

Record number: 7, Textual support number: 3 OBS

imazalil: term standardized by ISO.  3, record 7, English, - %28RS%29%2D1%2D%28%C3%9F%2Dallyloxy%2D2%2C%204%2Ddichlorophenethyl%29%20imidazole

Record number: 7, Textual support number: 4 OBS

Chemical formula: C₁₄H₁₄Cl₂N₂O  3, record 7, English, - %28RS%29%2D1%2D%28%C3%9F%2Dallyloxy%2D2%2C%204%2Ddichlorophenethyl%29%20imidazole

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 OBS

Fongicide.  4, record 7, French, - %5Ballyloxy%2D2%20%28dichloro%2D2%2C4%20ph%C3%A9nyl%29%2D2%2D%C3%A9thyl%5D%2D1%20imidazole

Record number: 7, Textual support number: 2 OBS

imazalil : terme normalisé par l'ISO.  4, record 7, French, - %5Ballyloxy%2D2%20%28dichloro%2D2%2C4%20ph%C3%A9nyl%29%2D2%2D%C3%A9thyl%5D%2D1%20imidazole

Record number: 7, Textual support number: 3 OBS

Formule chimique : C₁₄H₁₄Cl₂N₂O  4, record 7, French, - %5Ballyloxy%2D2%20%28dichloro%2D2%2C4%20ph%C3%A9nyl%29%2D2%2D%C3%A9thyl%5D%2D1%20imidazole

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

A crystalline base... composed of a pyrimidine ring fused with an imidazole ring...  2, record 8, English, - purine

Record number: 8, Textual support number: 1 CONT

The caffeine is closely related to a variety of chemicals: purines (a major constituent of the DNA) ...  3, record 8, English, - purine

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

Substance azotée basique dont la structure comporte deux chaînes fermées (l'une à 5, l'autre à 6 atomes).  2, record 8, French, - purine

Record 8,  Textual support,  Spanish

Record number: 8, Textual support number: 1 DEF

Sólido cristalino incoloro soluble en agua, alcohol y tolueno, ligeramente soluble en éter.  2, record 8, Spanish, - purina

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

Procedure based on the formation of a diazo linkage between enzyme proteins and aryldiazonium electrophilic groups on the insoluble support. Supports containing aromatic amino groups are treated with sodium nitrite in acidic solutions and the resultant activated support reacts with aromatic residues such as the phenolic residue of L-tyrosine or the imidazole residue of L-histidine to give azo derivatives.  1, record 9, English, - diazotization

Record number: 9, Textual support number: 1 CONT

There are many commercial diazonium salts used as azo coupling reagents, which are usually in a stabilized form (a stable diazotate) produced by reaction with alkali (forming the free base) or with zinc chloride (forming a diazo double salt) ... Diazonium ions are weak electrophiles; they react with highly reactive aromatic compounds - with phenols and tertiary aromatic amines - to yield azo compounds ... Azo coupling of proteins can be effected by polymers containing aryldiazonium functional groups ... Monomers containing aromatic nitro groups grafted onto polymers have been reduced, diazotized, and used to immobilize enzymes.  3, record 9, English, - diazotization

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

Bien avant que l'on ne songeât à immobiliser des enzymes à des fins industrielles, on savait [...] immobiliser les protéines que sont les anticorps, par diazotation, sans leur faire perdre leur activité biologique. Ce sont les développements de ces techniques qui ont permis l'apparition du génie enzymatique.  2, record 9, French, - diazotation

Record number: 9, Textual support number: 1 OBS

Parmi les supports activés de cette manière, le p. aminobenzoylcellulose ou le verre sont fréquemment employés.  3, record 9, French, - diazotation

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 OBS

1-butylimidazole: form recommended by the IUPAC (Int. Union of Pure and Applied Chemistry).  1, record 10, English, - 1%2Dbutylimidazole

Record number: 10, Textual support number: 2 OBS

N-(n-butyl) imidazole : The letters "N" and "n" must be italicized; incorrect form.  1, record 10, English, - 1%2Dbutylimidazole

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 OBS

1-butylimidazole : forme recommandée par l'UICPA (Union int. de chimie pure et appliquée).  1, record 10, French, - 1%2Dbutylimidazole

Record number: 10, Textual support number: 2 OBS

N-(n-butyl)imidazole : La lettre majuscule «N» et l'abréviation «n» s'écrivent en italique; forme incorrecte.  1, record 10, French, - 1%2Dbutylimidazole

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 OBS

Direction du service des laboratoires judiciaires, Gendarmerie royale du Canada.  2, record 11, French, - A%20Possible%20Imidazole%20Metabolite%20of%20Xylometazoline%20in%20Human%20Postmortem%20Liver

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

Chemical reaction in which one substituent (atom or group of atoms) in a compound is replaced by another substituent.  1, record 12, English, - substitution%20reaction

Record number: 12, Textual support number: 1 CONT

Specific acid-base catalysis by H⁺ or OH^- is of relatively limited importance in enzymatic reactions, but general acid-base catalysis is much more likely to be involved in the actions of enzymes. Many types of organic reactions occurring in cells--the addition of water to carbonyl groups, the hydrolysis of carboxylic and phosphoric esters, the elimination of water to form double bonds, and many substitutions reactions--are subject to this type of catalysis. Moreover, enzyme molecules are known to contain several kinds of functional groups capable of acting as general acids or general bases, e. g., amino, carboxyl, sulfhydryl, phenolic hydroxyl, and imidazole groups.  2, record 12, English, - substitution%20reaction

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 CONT

Les principales réactions de la chimie organique sont conditionnées à la fois par les molécules qui les subissent et les réactifs chimiques qui les provoquent. (...) Dans ce contexte, les quatre grandes classes de mécanismes réactionnels en chimie organique se rassemblent dans les rubriques suivantes : - les réactions de substitution, - les réactions d'élimination, - les réactions d'addition, - les réactions radicalaires.  1, record 12, French, - r%C3%A9action%20de%20substitution

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 DEF

Atom or group of atoms, acting as a unit, that has replaced a hydrogen atom in a hydrocarbon molecule and whose presence imparts characteristic properties to this molecule.  1, record 13, English, - functional%20group

Record number: 13, Textual support number: 1 CONT

As functional groups involved in enzyme immobilization, free amino and carboxyl groups, the sulfhydryl group of cysteine, the imidazole group of histidine, phenolic groups, and hydroxyl groups of serine and threonine may be considered. For immobilization of an enzyme it is necessary that functional groups in the active center should not be involved in the reaction leading to immobilization of the enzyme.  2, record 13, English, - functional%20group

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 DEF

Ensemble d'atomes caractéristique de la structure et des propriétés d'une série de molécules, principalement en chimie organique.  1, record 13, French, - groupe%20fonctionnel

Record number: 13, Textual support number: 1 CONT

La réaction enzymatique n'est possible que si le ou les substrats entrent en association avec le ou les sites stéréospécifiques de l'enzyme, ou sites actifs. Il est presque évident que la spécificité remarquable des enzymes suppose l'implication de plus d'un groupement fonctionnel dans la réaction elle-même, et surtout dans la définition rigoureuse de la conformation du site.  3, record 13, French, - groupe%20fonctionnel

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record 14,  Textual support,  French

Record number: 14, Textual support number: 1 OBS

Voir source pour contexte.  2, record 14, French, - noyau%20d%27imidazole

Record 14,  Textual support,  Spanish

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 OBS

Relative to a white crystalline heterocyclic base C3H4N2 made by the action of ammonia and formaldehyde on ... and isomeric with pyrazole.  2, record 15, English, - imidazole%20nucleus

Record 15,  Textual support,  French

Record 15,  Textual support,  Spanish