| slovo | definícia |
CH3O
(gcide) | Methoxyl \Meth*ox"yl\, n. [Methyl + hydroxyl.] (Chem.)
A hypothetical radical, CH3O, analogous to hydroxyl.
[1913 Webster] |
| | podobné slovo | definícia |
C6H3CH3OH2
(gcide) | Orcin \Or"cin\, n. [Etymology uncertain: cf. F. orcine.] (Chem.)
A colorless crystalline substance, C6H3.CH3.(OH)2, which is
obtained from certain lichens (Roccella, Lecanora, etc.),
also from extract of aloes, and artificially from certain
derivatives of toluene. It changes readily into orcein.
[1913 Webster] |
C6H3ICH3OH
(gcide) | Iodocresol \I`o*do*cre"sol\, n. [Iodo- + cresol.] (Org. Chem.)
Any of several isomeric iodine derivatives of the cresols,
C6H3I(CH3)OH, esp. one, an odorless amorphous powder, used
in medicine as a substitute for iodoform.
[Webster 1913 Suppl.] |
C6H4OCH3OH
(gcide) | Guiacol \Gui"a*col\, n. [Guiac + -ol.] (Chem.)
A colorless liquid, C6H4.OCH3.OH, resembling the phenols,
found as a constituent of woodtar creosote, and produced by
the dry distillation of guaiac resin.
[1913 Webster] |
CH33NCH2CH2OCOCH3OH-
(gcide) | acetylcholine \acetylcholine\ n.
1. a neurotransmitter released by the transmitting dendron at
autononmous synapses and at neuromuscular junctions. It is
a quaternary amine with an obligatory negative counterion.
The nominal formula for the hydroxide form is C7H17NO3.
Structural formula (CH3)3N(+)CH2CH2.O.CO.CH3.OH(-).
Note: Acetylcholine is the first recognized and best-studied
of the neurotransmitters. At receptors it is recycled
into choline by the action of acetylcholinesterase.
Acetylcholinesterase inhibitors therefore function as
nerve poisons. For biochemical studies it is prepared
typically in the chloride or bromide forms.
[WordNet 1.5 +PJC] |
CH3OC6H4-
(gcide) | Anisyl \An"i*syl\, n. (Org. Chem.)
(a) The univalent radical, CH3.O.C6H4-, of which anisol is
the hydride.
(b) The univalent radical CH3.O.C6H4.CH2-; as, anisyl
alcohol.
(c) The univalent radical CH3.O.C6H4.CO-, of anisic acid.
[Webster 1913 Suppl.] |
CH3OC6H4CH2-
(gcide) | Anisyl \An"i*syl\, n. (Org. Chem.)
(a) The univalent radical, CH3.O.C6H4-, of which anisol is
the hydride.
(b) The univalent radical CH3.O.C6H4.CH2-; as, anisyl
alcohol.
(c) The univalent radical CH3.O.C6H4.CO-, of anisic acid.
[Webster 1913 Suppl.] |
CH3OC6H4CO-
(gcide) | Anisyl \An"i*syl\, n. (Org. Chem.)
(a) The univalent radical, CH3.O.C6H4-, of which anisol is
the hydride.
(b) The univalent radical CH3.O.C6H4.CH2-; as, anisyl
alcohol.
(c) The univalent radical CH3.O.C6H4.CO-, of anisic acid.
[Webster 1913 Suppl.] |
CH3OCH3
(gcide) | Methyl \Meth"yl\, n. [See Methylene.] (Chem.)
A univalent hydrocarbon radical, CH3-, not existing alone
but regarded as an essential residue of methane, and
appearing as a component part of many derivatives; as, methyl
alcohol, methyl ether, methyl amine, etc. [Formerly written
also methule, methyle, etc.]
[1913 Webster]
Methyl alcohol (Chem.), a light, volatile, inflammable
liquid, CH3.OH, obtained by the distillation of wood,
and hence called wood alcohol or wood spirit;
tecnically referred to as methanol; -- called also
methol, carbinol, etc.
Methyl amine (Chem.), a colorless, inflammable, alkaline
gas, CH3.NH2, having an ammoniacal, fishy odor. It is
produced artificially, and also occurs naturally in
herring brine and other fishy products. It is regarded as
ammonia in which a third of its hydrogen is replaced by
methyl, and is a type of the class of substituted
ammonias.
Methyl ether (Chem.), a light, volatile ether CH3.O.CH3,
obtained by the etherification of methyl alcohol; --
called also methyl oxide or dimethyl ether.
Methyl green. (Chem.) See under Green, n.
Methyl orange. (Chem.) See Helianthin.
Methyl violet (Chem.), an artificial dye, consisting of
certain methyl halogen derivatives of rosaniline.
[1913 Webster] |
CH3OH
(gcide) | methanol \methanol\ n. (Chem.)
The simplest alcohol of the paraffin series, CH3.OH; methyl
alcohol. Called also wood alcohol. It is used as an
antifreeze solvent, as a fuel, and as a denaturant for ethyl
alcohol.
Syn: methyl alcohol, wood alcohol, wood spirit.
[WordNet 1.5 +PJC]Methyl \Meth"yl\, n. [See Methylene.] (Chem.)
A univalent hydrocarbon radical, CH3-, not existing alone
but regarded as an essential residue of methane, and
appearing as a component part of many derivatives; as, methyl
alcohol, methyl ether, methyl amine, etc. [Formerly written
also methule, methyle, etc.]
[1913 Webster]
Methyl alcohol (Chem.), a light, volatile, inflammable
liquid, CH3.OH, obtained by the distillation of wood,
and hence called wood alcohol or wood spirit;
tecnically referred to as methanol; -- called also
methol, carbinol, etc.
Methyl amine (Chem.), a colorless, inflammable, alkaline
gas, CH3.NH2, having an ammoniacal, fishy odor. It is
produced artificially, and also occurs naturally in
herring brine and other fishy products. It is regarded as
ammonia in which a third of its hydrogen is replaced by
methyl, and is a type of the class of substituted
ammonias.
Methyl ether (Chem.), a light, volatile ether CH3.O.CH3,
obtained by the etherification of methyl alcohol; --
called also methyl oxide or dimethyl ether.
Methyl green. (Chem.) See under Green, n.
Methyl orange. (Chem.) See Helianthin.
Methyl violet (Chem.), an artificial dye, consisting of
certain methyl halogen derivatives of rosaniline.
[1913 Webster]Alcohol \Al"co*hol\ ([a^]l"k[-o]*h[o^]l), n. [Cf. F. alcool,
formerly written alcohol, Sp. alcohol alcohol, antimony,
galena, OSp. alcofol; all fr. Ar. al-kohl a powder of
antimony or galena, to paint the eyebrows with. The name was
afterwards applied, on account of the fineness of this
powder, to highly rectified spirits, a signification unknown
in Arabia. The Sp. word has both meanings. Cf. Alquifou.]
1. An impalpable powder. [Obs.]
[1913 Webster]
2. The fluid essence or pure spirit obtained by distillation.
[Obs.] --Boyle.
[1913 Webster]
3. Pure spirit of wine; pure or highly rectified spirit
(called also ethyl alcohol or ethanol, CH3.CH2.OH);
the spirituous or intoxicating element of fermented or
distilled liquors, or more loosely a liquid containing it
in considerable quantity. It is extracted by simple
distillation from various vegetable juices and infusions
of a saccharine nature, which have undergone vinous
fermentation.
Note: [The ferementation is usually carried out by addition
of brewer's yeast, Saccharomyces cerevisiae to an
aqueous solution containing carbohydrates.]
[1913 Webster +PJC]
Note: As used in the U. S. "Pharmacop[oe]ia," alcohol
contains 91 per cent by weight of ethyl alcohol and 9
per cent of water; and diluted alcohol (proof spirit)
contains 45.5 per cent by weight of ethyl alcohol and
54.5 per cent of water.
[1913 Webster]
4. (Organic Chem.) A class of compounds analogous to vinic
alcohol in constitution. Chemically speaking, they are
hydroxides of certain organic radicals; as, the radical
ethyl forms common or ethyl alcohol (C2H5.OH); methyl
forms methyl alcohol (CH3.OH) or wood alcohol; amyl
forms amyl alcohol (C5H11.OH) or fusel oil, etc.
[1913 Webster]Carbinol \Car"bi*nol\, n. [Carbin (Kolbe's name for the radical)
+ -ol.] (Chem.)
Methyl alcohol, CH3OH; -- also, by extension, any one in
the homologous series of paraffine alcohols of which methyl
alcohol is the type.
[1913 Webster] |
CH3ONa
(gcide) | Methylate \Meth"yl*ate\, n. [Methyl + alcoholate.] (Chem.)
An alcoholate of methyl alcohol in which the hydroxyl
hydrogen is replaced by a metal, after the analogy of a
hydrate; as, sodium methylate, CH3ONa.
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