| slovo | definícia |
Hydroxy-
(gcide) | Hydroxy- \Hy*drox"y-\ (Chem.)
A combining form, also used adjectively, indicating hydroxyl
as an ingredient.
[1913 Webster]
Hydroxy acid (Chem.), an organic acid, having (besides the
hydroxyl group of the carboxyl radical) an alcoholic
hydroxyl group, and thus having the qualities of an
alcohol in addition to its acid properties; as, lactic and
tartaric acids are hydroxy acids.
[1913 Webster] |
| | podobné slovo | definícia |
alpha-Hydroxybenzeneacetic acid
(gcide) | amygdalic \am`yg*dal"ic\ ([.a]m`[i^]g*d[.a]l"[i^]k [a^]s"[i^]d),
n. (Chem.)
An organic acid (C6H5.CH(OH).COOH) extracted from bitter
almonds; called also mandelic acid and
[alpha]-Hydroxybenzeneacetic acid.
[PJC] |
dihydroxy benzene
(gcide) | Hydroquinone \Hy`dro*qui"none\, n. [Hydro-, 2 + quinone.]
(Chem.)
A white crystalline substance, C6H4(OH)2, obtained by the
reduction of quinone. It is a diacid phenol, resembling, and
metameric with, pyrocatechin and resorcin. Called also
dihydroxy benzene.
[1913 Webster] |
hexahydroxycyclohexane
(gcide) | inositol \i*no"si*tol\ ([i^]*n[o^]s"[i^]*t[o^]l), n. [Gr. 'i`s,
'ino`s, strength, muscle.] (Physiol. Chem.)
A white crystalline substance (C6H12O6) with a sweet taste,
widely distributed in certain animal tissues and fluids,
particularly in the muscles of the heart and lungs, and also
in some plants, as in unripe pease, beans, potato sprouts,
etc. Although isomeric with dextrose, it has no carbonyl
(aldehyde or ketone) group, and is therefore not a
carbohydrate, but a derivative of cyclohexane. Called also
inosite, cyclohexitol, cyclohexanehexol,
hexahydroxycyclohexane and phaseomannite. There are nine
possible steroisomers, not all of which are found naturally.
The predominate natural form is
cis-1,2,3,5-trans-4,6-cyclohexanehexol, also called
myo-inositol. The naturally occurring phytic acid in plants
is the hexaphosphate of inositol, from which inositol may be
manufactured; phytin is the calcium-magnesium salt of phytic
acid. It is also a component of phosphatidylinositol. --MI11
[1913 Webster +PJC] |
Hydroxy acid
(gcide) | Hydroxy- \Hy*drox"y-\ (Chem.)
A combining form, also used adjectively, indicating hydroxyl
as an ingredient.
[1913 Webster]
Hydroxy acid (Chem.), an organic acid, having (besides the
hydroxyl group of the carboxyl radical) an alcoholic
hydroxyl group, and thus having the qualities of an
alcohol in addition to its acid properties; as, lactic and
tartaric acids are hydroxy acids.
[1913 Webster] |
hydroxy cymene
(gcide) | Thymol \Thym"ol\, n. [Thyme + -ol.] (Chem.)
A phenol derivative of cymene, C10H13.OH, isomeric with
carvacrol, found in oil of thyme, and extracted as a white
crystalline substance of a pleasant aromatic odor and strong
antiseptic properties; -- called also hydroxy cymene.
[1913 Webster] |
hydroxy hexane
(gcide) | mannitol \man"ni*tol\, n. [Mannite + -ol.]
1. (Chem.) A white crystalline hexose
(HO.CH2.(CHOH)4.CH2.OH) of a sweet taste obtained from a
so-called manna, the dried sap of the flowering ash
(Fraxinus ornus); -- called also mannite, and {hydroxy
hexane}. Cf. Dulcite. It is used in pharmacy as
excipient and diluent for solids and liquids. It is also
used as a food additive for anti-caking properties, or as
a sweetener, and, illegally, to "cut" (dilute) illegal
drugs such as cocaine or heroin.
Syn: D-mannitol; manna sugar; cordycepic acid; Diosmol;
Mannicol; Mannidex; Osmiktrol; Osmosal.
[1913 Webster +PJC] |
hydroxyacetic acid
(gcide) | Glycolic \Gly*col"ic\, a. (Chem.)
Pertaining to, or derived from, glycol; as, glycolic ether;
glycolic acid.
[1913 Webster]
Glycolic acid (Chem.), an organic acid, found naturally in
unripe grapes and in the leaves of the wild grape
(Ampelopsis quinquefolia), and produced artificially in
many ways, as by the oxidation of glycol, -- whence its
name. It is a sirupy, or white crystalline, substance,
HO.CH2.CO2H, has the properties both of an alcohol and
an acid, and is a type of the hydroxy acids; -- called
also hydroxyacetic acid.
[1913 Webster] |
hydroxybenzoic
(gcide) | Salicylic \Sal`i*cyl"ic\, a. (Chem.)
Pertaining to, derived from, or designating, an acid formerly
obtained by fusing salicin with potassium hydroxide, and now
made in large quantities from phenol (carbolic acid) by the
action of carbon dioxide on heated sodium phenolate. It is a
white crystalline substance. It is used as an antiseptic, and
in its salts in the treatment of rheumatism. Called also
hydroxybenzoic acid.
[1913 Webster] |
hydroxy-benzyl alcohol
(gcide) | Saligenin \Sa*lig"e*nin\, n. [Salicin + -gen.] (Chem.)
A phenol alcohol obtained, by the decomposition of salicin,
as a white crystalline substance; -- called also
hydroxy-benzyl alcohol.
[1913 Webster] |
hydroxy-coumarin
(gcide) | Umbelliferone \Um`bel*lif"er*one\, n. (Chem.)
A tasteless white crystalline substance, C9H6O3, found in
the bark of a certain plant (Daphne Mezereum), and also
obtained by the distillation of certain gums from the
Umbelliferae, as galbanum, asafetida, etc. It is analogous
to coumarin. Called also hydroxy-coumarin. Its strong
fluorescence under ultraviolet light makes it useful in
analytical biochemistry, as, for example, to detect
phosphatase activity by hydrolysis of umbelliferyl phosphate.
[1913 Webster +PJC] |
Hydroxyl
(gcide) | Hydroxyl \Hy*drox"yl\, n. [Hydro-, 2 + oxygen + -yl.] (Chem.)
A compound radical, or unsaturated group, HO, consisting of
one atom of hydrogen and one of oxygen. It is a
characteristic part of the hydrates, the alcohols, the oxygen
acids, etc.
[1913 Webster] |
Hydroxylamine
(gcide) | Hydroxylamine \Hy*drox`yl*am"ine\, n. [Hydroxyl + amine.]
(Chem.)
A nitrogenous, organic base, NH2.OH, resembling ammonia,
and produced by a modified reduction of nitric acid. It is
usually obtained as a volatile, unstable solution in water.
It acts as a strong reducing agent.
[1913 Webster] |
hydroxymethyl
(gcide) | hydroxymethyl \hydroxymethyl\ n.
a methyl radical with a hydroxyl group replacing one of the
hydrogen atoms.
[WordNet 1.5] |
hydroxyproline
(gcide) | hydroxyproline \hydroxyproline\ n.
A crystalline amino acid (C5H9NO3), a hydroxylated proline,
obtained by hydrolysis of gelatin or collagen. Chemically it
is 4-hydroxy-L-proline. It is classified as nonessential for
growth in rats.
[WordNet 1.5 +PJC] |
tetrahydroxyadipic
(gcide) | Melassic \Me*las"sic\, a. [See Molasses.] (Chem.)
Pertaining to, or designating, an acid obtained from molasses
or glucose, and probably identical with saccharic acid
(also called D-glucaric acid or tetrahydroxyadipic acid).
See Saccharic.
[1913 Webster] |
5-hydroxy-3-methylglutaryl-coenzyme a reductase
(wn) | 5-hydroxy-3-methylglutaryl-coenzyme A reductase
n 1: a liver enzyme that is responsible for producing
cholesterol [syn: HMG-CoA reductase,
5-hydroxy-3-methylglutaryl-coenzyme A reductase] |
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