TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
C4H5N [2 records]
Record 1 - internal organization data 2013-08-28
Record 1, English
Record 1, Subject field(s)
- Chemical Elements and Compounds
Universal entry(ies) Record 1
Record 1, Main entry term, English
- 2-methylprop-2-enenitrile
1, record 1, English, 2%2Dmethylprop%2D2%2Denenitrile
correct, see observation
Record 1, Abbreviations, English
Record 1, Synonyms, English
- methacrylonitrile 2, record 1, English, methacrylonitrile
correct
- MAN 3, record 1, English, MAN
see observation
- MAN 3, record 1, English, MAN
- isopropene cyanide 2, record 1, English, isopropene%20cyanide
former designation, correct
- isopropenylnitrile 2, record 1, English, isopropenylnitrile
former designation, correct
- methylacrylonitrile 4, record 1, English, methylacrylonitrile
former designation, correct
- 2-methylacrylonitrile 1, record 1, English, 2%2Dmethylacrylonitrile
former designation, correct
- alpha-methylacrylonitrile 2, record 1, English, alpha%2Dmethylacrylonitrile
former designation, correct
- 2-methylpropenenitrile 4, record 1, English, 2%2Dmethylpropenenitrile
former designation, correct
- 2-methyl-2-propenenitrile 2, record 1, English, 2%2Dmethyl%2D2%2Dpropenenitrile
former designation, correct
- 2-cyano-1-propene 1, record 1, English, 2%2Dcyano%2D1%2Dpropene
former designation, avoid
- 2-cyanopropene-1 4, record 1, English, 2%2Dcyanopropene%2D1
former designation, avoid
- methyl acrylonitrile 5, record 1, English, methyl%20acrylonitrile
former designation, avoid
Record 1, Textual support, English
Record number: 1, Textual support number: 1 OBS
A chemical compound in the form of a clear, colorless liquid, used in vinyl nitrile monomer, copolymer with sterene, butadiene, elastomers, coatings, and in plastics. 6, record 1, English, - 2%2Dmethylprop%2D2%2Denenitrile
Record number: 1, Textual support number: 2 OBS
2-methylprop-2-enenitrile: form recommended by the IUPAC (International Union of Pure and Applied Chemistry) for the systematic name. 1, record 1, English, - 2%2Dmethylprop%2D2%2Denenitrile
Record number: 1, Textual support number: 3 OBS
MAN: This might be an in-house or a non-recognized abbreviation; not to be used alone, to avoid any risk of confusion. 1, record 1, English, - 2%2Dmethylprop%2D2%2Denenitrile
Record number: 1, Textual support number: 4 OBS
Also known under the commercial designations RCRA waste number U152 and USAF ST-40. 7, record 1, English, - 2%2Dmethylprop%2D2%2Denenitrile
Record number: 1, Textual support number: 5 OBS
The prefix "alpha" must be replaced by the corresponding Greek letter or italicized. 7, record 1, English, - 2%2Dmethylprop%2D2%2Denenitrile
Record number: 1, Textual support number: 6 OBS
Chemical formula: C4H5N 7, record 1, English, - 2%2Dmethylprop%2D2%2Denenitrile
Record 1, Key term(s)
- a-methylacrylonitrile
Record 1, French
Record 1, Domaine(s)
- Éléments et composés chimiques
Entrée(s) universelle(s) Record 1
Record 1, Main entry term, French
- 2-méthylprop-2-ènenitrile
1, record 1, French, 2%2Dm%C3%A9thylprop%2D2%2D%C3%A8nenitrile
correct, see observation, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- méthacrylonitrile 2, record 1, French, m%C3%A9thacrylonitrile
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
2-méthylprop-2-ènenitrile : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée) pour le nom systématique. 1, record 1, French, - 2%2Dm%C3%A9thylprop%2D2%2D%C3%A8nenitrile
Record number: 1, Textual support number: 2 OBS
Formule chimique : C4H5N 3, record 1, French, - 2%2Dm%C3%A9thylprop%2D2%2D%C3%A8nenitrile
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2011-01-12
Record 2, English
Record 2, Subject field(s)
- Chemical Elements and Compounds
- Biochemistry
Universal entry(ies) Record 2
Record 2, Main entry term, English
- pyrrole
1, record 2, English, pyrrole
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A heterocyclic nitrogenous compound [which] is an unsaturated five-sided ring ... considered to be a resonance hybrid. 1, record 2, English, - pyrrole
Record number: 2, Textual support number: 1 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. 1, record 2, English, - pyrrole
Record number: 2, Textual support number: 2 OBS
Chemical formula: C4H5N or C4H4NH 2, record 2, English, - pyrrole
Record 2, French
Record 2, Domaine(s)
- Éléments et composés chimiques
- Biochimie
Entrée(s) universelle(s) Record 2
Record 2, Main entry term, French
- pyrrole
1, record 2, French, pyrrole
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- pyrrol 1, record 2, French, pyrrol
correct, masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Composé hétérocyclique azoté [...] à cycle pentagonal. 2, record 2, French, - pyrrole
Record number: 2, Textual support number: 1 OBS
Le noyau du pyrrole se retrouve dans de nombreux produits naturels : pigments biliaires, porphyrines, etc. 2, record 2, French, - pyrrole
Record number: 2, Textual support number: 2 OBS
Formule chimique : C4H5N ou C4H4NH 3, record 2, French, - pyrrole
Record 2, Spanish
Record 2, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.
Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.
- Date Modified: