TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

PYRROLE [9 records]

Record 1 2016-03-15

English

Subject field(s)
  • Chemical Elements and Compounds
  • Biochemistry
CONT

The porphyrins are cyclic systems of four linked pyrrole rings(porphin nucleus)...

CONT

Pyrrole groups are present in both chlorophyll and hemoglobin.

CONT

porphyrin : Any of a number of natural nitrogenous organic compounds characterized by four heterocyclic pyrrole groups...

French

Domaine(s)
  • Éléments et composés chimiques
  • Biochimie
CONT

pyrrol ou pyrrole : Composé hétérocyclique (...). Son rôle biochimique est considérable sous la forme tétrapyrrolique cyclique c.-à-d. comportant quatre noyaux pyrrole. De ces noyaux sont issues les hémoglobines, les porphyrines, la bilirubine, etc.

CONT

Le noyau du pyrrole se retrouve dans de nombreux produits naturels : pigments biliaires, porphyrines, etc.

Spanish

Save record 1

Record 2 2011-12-20

English

Subject field(s)
  • Chemistry
DEF

Dark brown oil with a disagreeable odor, derived by destructive distillation of bones or other animal substances.

OBS

Use : alcohol denaturant, insecticide, source of pyrrole, organic preparations.

French

Domaine(s)
  • Chimie
DEF

[...] liquide qu'on obtient en rectifiant le produit huileux de la distillation sèche des os, de la corne et des autres substances animales analogues. Dippel la recommandait comme médicament antihystérique.

Spanish

Campo(s) temático(s)
  • Química
Save record 2

Record 3 2011-08-23

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
HC:CHCH:CHO
formula
C4H4O
formula, see observation
110-00-9
CAS number
DEF

A heterocyclic compound which appears under the form of a colorless liquid turning brown on standing, thiw colour change being retarded be a small amount of water added, which is insoluble in water, soluble in alcohol and ether, is derived by the dry distillation of furoic acid from furfural, and is used in organic synthesis, especially for pyrrole, tetrahydrofuran, and thiophene.

OBS

furan: form recommended by the IUPAC (International Union of Pure and Applied Chemistry).

OBS

Chemical formula: C4H4O

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
HC:CHCH:CHO
formula
C4H4O
formula, see observation
110-00-9
CAS number
DEF

Composé hétérocyclique oxygéné [...] dérivant du furfural.

OBS

furane : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée).

OBS

Formule chimique : C4H4O

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
Entrada(s) universal(es)
HC:CHCH:CHO
formula
C4H4O
formula, see observation
110-00-9
CAS number
OBS

Líquido incoloro que pardea con el tiempo. Insoluble en agua, soluble en alcohol y éter. Muy tóxico. Inflamable.

OBS

Fórmula química: C4H4O

Save record 3

Record 4 2011-02-14

English

Subject field(s)
  • Chemical Elements and Compounds
  • Agricultural Chemicals
Universal entry(ies)
C11H6Cl2N2
formula, see observation
74738-17-3
CAS number
DEF

A pyrrole fungicide usually used to control seed-borne pathogens in cereal crops but it also has other uses.

OBS

H: This capital letter must be italicized.

OBS

Chemical formula: C11H6Cl2N2

French

Domaine(s)
  • Éléments et composés chimiques
  • Agents chimiques (Agriculture)
Entrée(s) universelle(s)
C11H6Cl2N2
formula, see observation
74738-17-3
CAS number
OBS

Fongicide.

OBS

Formule chimique : C11H6Cl2N2

Spanish

Save record 4

Record 5 2011-02-11

English

Subject field(s)
  • Chemistry
DEF

A member of a group of compounds containing four reduced pyrrole rings joined into a macrocyclic ring by links between their [alpha] positions; three of these links are formed by a one-carbon unit(methylidyne radicals) and the other by a direct Calpha-Calpha bond. They include various B-12 vitamins, factors, and derivatives based upon the skeleton of corrin, C19 H22 N4.

OBS

The word "alpha" must be replaced by the corresponding Greek letter.

French

Domaine(s)
  • Chimie
DEF

Un des composés faisant partie de l'ensemble des produits contenant quatre noyaux pyrroles réduits qui sont reliés par leurs positions [alpha] de manière à former un macrocycle; trois de ces liaisons sont formées par une unité contenant un atome de carbone (groupes méthylidynes) et l'autre par une liaison directe C[alpha]-C[alpha]. Ils comportent divers facteurs et dérivés de la vitamine B-12 dont le squelette est fondé sur celui de la corrine, C19 H22 [N indice 4].

OBS

Le mot «alpha» doit être remplacé par la lettre grecque correspondante.

Spanish

Save record 5

Record 6 2011-01-12

English

Subject field(s)
  • Chemical Elements and Compounds
  • Biochemistry
Universal entry(ies)
C4H5N
formula, see observation
C4H4NH
formula, see observation
DEF

A heterocyclic nitrogenous compound [which] is an unsaturated five-sided ring ... considered to be a resonance hybrid.

OBS

Pyrroles readily combine with such metals as iron, copper, and nickel, which accounts for their importance in the formation of such biochemically essential complexes as porphyrins.

OBS

Chemical formula: C4H5N or C4H4NH

French

Domaine(s)
  • Éléments et composés chimiques
  • Biochimie
Entrée(s) universelle(s)
C4H5N
formula, see observation
C4H4NH
formula, see observation
DEF

Composé hétérocyclique azoté [...] à cycle pentagonal.

OBS

Le noyau du pyrrole se retrouve dans de nombreux produits naturels : pigments biliaires, porphyrines, etc.

OBS

Formule chimique : C4H5N ou C4H4NH

Spanish

Save record 6

Record 7 2003-06-13

English

Subject field(s)
  • Chemical Elements and Compounds
DEF

A class of red-pigmented compounds with a cyclic tetrapyrrolic structure in which the four pyrrole rings are joined through their 2-carbon atoms by four methane bridges(=C-).

French

Domaine(s)
  • Éléments et composés chimiques
DEF

Nom générique des composés formés de quatre noyaux pyrroliques et possédant la porphine comme squelette.

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
DEF

Derivado pirrólico sin hierro ni magnesio producido por numerosas plantas y tejidos de animales.

Save record 7

Record 8 2001-01-18

English

Subject field(s)
  • Chemistry
  • Biological Sciences
DEF

The resonance-stabilized ring characteristic of aromatic organic compounds.

CONT

Most aromatic rings are planar six-membered rings(e. g., benzene or pyridine) or planar five-membered rings containing a hetero atom with an unshared electron pair(e. g,, furan or pyrrole). Although aromatic rings are unsaturated, they do not undergo the addition reactions characteristic of alkenes; instead, aromatic compounds are characterized by substitution reactions. Many organic compounds, such as naphthalene and purine, contain several aromatic rings fused together.

OBS

It appears that human, because of the course of evolution, do not have biochemical ability to synthesize the benzene ring. As a result, phenylalanine and tryptophan derivatives are essential in the human diet.

French

Domaine(s)
  • Chimie
  • Sciences biologiques
CONT

La famille [...] des aminoacides non polaires [...] contient cinq aminoacides ayant une chaîne hydrocarbonée aliphatique: alanine, leucine, isoleucine, valine et proline, deux possédant des noyaux aromatiques : phénylalanine et tryptophane, et un contenant du soufre : la méthionine. Tous ces aminoacides sont moins solubles dans l'eau que ne le sont les aminoacides polaires.

Spanish

Campo(s) temático(s)
  • Química
  • Ciencias biológicas
Save record 8

Record 9 1993-02-17

English

Subject field(s)
  • Chemical Elements and Compounds
CONT

Leucocyte esterase :[The] test identifies an enzyme present in azurophilic or primary neutrophil granulocytes. There are the "pus cells" found due to an inflammation of the urinary tract. The test uses pyrrole amino acid ester and a diazonium salt to measure the level of the enzyme.

French

Domaine(s)
  • Éléments et composés chimiques

Spanish

Save record 9

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