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METHYL RADICAL [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-01-30

English

Subject field(s)
  • Chemistry
DEF

The hypothetical radical of the monocarbon series (CH3), the base of pyroxylic or wood spirit or pyroligneous naphtha, of formic acid and of a large series of organic compounds.

OBS

[also] attrib. and Comb., as methyl compound, radical, etc. ;esp. in names of salts of methyl, e. g. methyl bromide, chloride, hydride. Also prefixed(often without hyphen) to the name of an organic compound to express the addition of methyl to its composition, or the replacement of hydrogen atoms by equivalents of methyl, as in methylacetonamine, methylaniline, methylcarbonic(acid), methyl-codeia, methyluramine, etc.

French

Domaine(s)
  • Chimie
DEF

Radical monovalent de formule CH3-, prototype des radicaux alkyles.

OBS

S'utilise aussi comme préfixe ou en apposition, pour indiquer la présence du méthyle. P. ex. : méthylaniline, bromure de méthyle.

Spanish

Campo(s) temático(s)
  • Química
Save record 1

Record 2 2011-02-07

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
CH3CO-
correct, formula, see observation
CH3-CO-
correct, formula, see observation
DEF

a chemical group related to acetic acid. It is bound through an ester linkage to polyose chains (especially xylans) in wood and other plants. The natural moisture present in plants hydrolyzes the acetyl groups to acetic acid, particularly at elevated temperatures.

DEF

A two-carbon organic radical containing a methyl group and a carbonyl group.

OBS

Chemical formula: CH3CO- or CH3-CO-

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
CH3CO-
correct, formula, see observation
CH3-CO-
correct, formula, see observation
DEF

Radical organique monovalent CH3-CO- dérivé de l'acide acétique.

OBS

acétylé : Se dit d'un dérivé renfermant le groupement acétylé.

OBS

Formule chimique : CH3CO- ou CH3-CO-

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
Entrada(s) universal(es)
CH3CO-
correct, formula, see observation
CH3-CO-
correct, formula, see observation
OBS

Fórmula química: CH3CO- o CH3-CO-

Save record 2

Record 3 1989-01-09

English

Subject field(s)
  • Biochemistry
OBS

trans. Having or characterized by various atoms or groups on opposite sides of the molecule ... - opposed to cis.

OBS

cinnamoyl. The acid radical C6H5CH= CHCO - of cinnamic acid.

OBS

methyl. An alkyl radical CH3 derived from methane by removal of one hydrogen atom that is known usu. in combination in many compounds but is also isolated momentarily in the free state as a gaseous fragmentation product of the pyrolysis of organic compounds.

OBS

Ecgonine. A crystalline alkaloid C9H15NO3 obtained by hydrolysis of cocaine; tropine-carboxylic acid.

French

Domaine(s)
  • Biochimie
OBS

trans. Se dit d'un isomère, dans lequel deux substituants semblables sont éloignés l'un de l'autre.

OBS

Cinnamoyle. Radical univalent de formule C6H5 - CH= CH - CO -, correspondant à l'acide cinnamique par perte de l'hydroxyle.

OBS

ecgonine. Aminoalcool, de formule C9H15NO3, obtenu par hydrolyse de la cocaïne. Par méthylation et benzoylation de l'ecgonine, on régénère la cocaïne [...]

OBS

méthyle. Radical monovalent de formule CH3 -, prototype des radicaux alkyles.

Spanish

Save record 3

Record 4 1989-01-09

English

Subject field(s)
  • Biochemistry
OBS

Cis. Having or characterized by certain atoms or groups on the same side of the molecule ... opposed to trans.

OBS

cinnamoyl. The acid radical C6H5CH= CHCO - of cinnamic acid.

OBS

methyl. An alkyl radical CH3 derived from methane by removal of one hydrogen atom that is known usu. in combination in many compounds but is also isolated momentarily in the free state as a gaseous fragmentation product of the pyrolysis of organic compounds.

OBS

ecgonine. A crystalline alkaloid C9H15NO3 obtained by hydrolysis of cocaine; tropine-carboxylic acid.

French

Domaine(s)
  • Biochimie
OBS

Cis. Se dit d'un isomère géométrique ou d'un diastéréo-isomère où deux substituants semblables se font face.

OBS

cinnamoyle. Radical univalent de formule C6H5 -CH - CH= CH - CO -, correspondant à l'acide cinnamique par perte de l'hydroxyle.

OBS

ecgonine. Aminoalcool, de formule C9H15NO3, obtenu par hydrolyse de la cocaïne. Par méthylation et benzoylation de l'ecgonine, on régénère la cocaïne [...]

OBS

méthyle. Radical monovalent de formule CH3-, prototype des radicaux alkyles.

Spanish

Save record 4

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