| slovo | definícia |
H2CO
(gcide) | Formaldehyde \For*mal"de*hyde\, n. [Formic + aldehyde.] (Chem.)
A colorless, volatile liquid, H2CO, resembling acetic or
ethyl aldehyde, and chemically intermediate between methyl
alcohol and formic acid.
[1913 Webster] |
| | podobné slovo | definícia |
C2H2CO2H2
(gcide) | Fumaric \Fu*mar"ic\, a. (Chem.)
Pertaining to, or derived from, fumitory ({Fumaria
officinalis}).
[1913 Webster]
Fumaric acid (Chem.), a widely occurring organic acid,
extracted from fumitory as a white crystallline substance,
C2H2(CO2H)2, and produced artificially in many ways, as
by the distillation of malic acid; boletic acid. It is
found also in the lichen, Iceland moss, and hence was also
called lichenic acid.
[1913 Webster] |
C2H2OH2CO2H2
(gcide) | Tartaric \Tar*tar"ic\, a. (Chem.)
Of or pertaining to tartar; derived from, or resembling,
tartar.
[1913 Webster]
Tartaric acid. (a) An acid widely diffused throughout the
vegetable kingdom, as in grapes, mountain-ash berries,
etc., and obtained from tartar as a white crystalline
substance, C2H2(OH)2.(CO2H)2, having a strong pure acid
taste. It is used in medicine, in dyeing, calico printing,
photography, etc., and also as a substitute for lemon
juice. Called also dextro-tartaric acid.
(b) By extension, any one of the series of isomeric acids
(racemic acid, levotartaric acid, inactive tartaric acid)
of which tartaric acid proper is the type.
[1913 Webster] |
C6H5C2H2C2H2CO2H
(gcide) | Cinnamic \Cin*nam"ic\, a. [From Cinnamon.] (Chem.)
Pertaining to, or obtained from, cinnamon.
[1913 Webster]
Cinnamic acid (Chem.), a white, crystalline, odorless
substance. C6H5.C2H2C2H2.CO2H, formerly obtained from
storax and oil of cinnamon, now made from certain benzene
derivatives in large quantities, and used for the
artificial production of indigo.
[1913 Webster] |
CH2CCOOHCH2COOH
(gcide) | itaconic acid \it`a*con"ic ac"id\, n. (Chem.)
The unsaturated dicarboxylic acid CH2=C(COOH)CH2.COOH, also
called methylenesuccynic acid and {propylene dicarboxylic
acid}.
[PJC] |
CH2CO2
(gcide) | Malonyl \Mal"o*nyl\, n. [Malonic + -yl.] (Chem.)
A divalent diacyl radical, CH2.(CO)2, from malonic acid.
[1913 Webster] |
CH2CO2H2
(gcide) | Malonic \Ma*lon"ic\, a. (Chem.)
Pertaining to, or designating, a dicarboxylic acid produced
artifically as a white crystalline substance, CH2.(CO2H)2,
and so called because obtained by the oxidation of malic
acid.
[1913 Webster] |
CH2CONH2CO
(gcide) | Barbituric acid \Bar`bi*tu"ric ac"id\ (Chem.)
A white, crystalline substance, CH2(CO.NH)2.CO, derived
from alloxantin, also from malonic acid and urea, and
regarded as a substituted urea.
[1913 Webster] Barbizon school |
CH32CHCH2CHNH2-COOH
(gcide) | Leucine \Leu"cine\ (l[=oo]"s[=e]n), Leucin
\Leu"cin\(l[=u]"s[i^]n), n. [Gr. leyko`s white.] (Physiol.
Chem.)
a naturally occurring alpha-amino acid
((CH3)2CH.CH2.CH(NH2)-COOH), one of the building units of
almost all proteins of living organisms, both animal and
vegetable. It is one of the essential amino acids (not
synthesized by the human body, a required component for
proper nutrition), and is hydrophobic in character when bound
in proteins. In isolated form it is a white, crystalline,
zwitterionic substance formed, e. g. by the decomposition of
proteins by pancreatic digestion, by the action of boiling
dilute mineral acid, or by putrefaction. Chemically it is to
be considered as amido-caproic acid. It occurs as two optical
isomers, the L- and D-forms. The L-form, L-leucine, is the
natural form, present in most proteins.
[1913 Webster +PJC] |
H2COCH32
(gcide) | Methylal \Meth"yl*al\, n. [Methylene + alcohol.] (Chem.)
A light, volatile liquid, H2C(OCH3)2, regarded as a complex
ether, and having a pleasant ethereal odor. It is obtained by
the partial oxidation of methyl alcohol. Called also
formal.
[1913 Webster] |
HOC6H4C2H2CO2H
(gcide) | Coumaric \Cou*mar"ic\ (k??-m?r"?k), a.
Relating to, derived from, or like, the Dipterix odorata, a
tree of Guiana.
[1913 Webster]
Coumaric acid (Chem.), one of a series of aromatic acids,
related to cinnamic acid, the most important of which is a
white crystalline substance, HO.C6H4.C2H2.CO2H, obtained
from the tonka bean, sweet clover, etc., and also produced
artificially.
[1913 Webster] |
HOCH2CHNH2COOH
(gcide) | Serine \Ser"ine\ (s[e^]r"[=e]n; s[e^]r"[i^]n; also, less
correctly, s[=e]r"[=e]n), n. [L. sericus silken.] (Chem.)
one of the natural L-amino acids, obtainable as a white
crystalline nitrogenous substance by the action of dilute
sulphuric acid on silk gelatin. It is found in many proteins,
and, having a free primary hydroxyl group on the side chain,
is involved in the catalytic action at the active site of
some enzymes, such as proteases. The IUPAC abbreviation for
serine in protein sequences is Ser. Chemically it is
2-amino-3-hydroxy-propanoic acid (C3H7NO3),
HO.CH2.CH(NH2).COOH.
[1913 Webster +PJC] Serio-comic |
HOCH2CO2H
(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] |
HOCOCOCH2COOH
(gcide) | oxalacetic acid \oxalacetic acid\ n. (Chem.)
A dicarboxylic acid (HO.CO.CO.CH2.CO.OH).
[WordNet 1.5] |
NH2COCOHO
(gcide) | Oxamic \Ox*am"ic\, a. [Oxalic + amido] (Chem.)
Pertaining to, or designating, an acid NH2.CO.CO.HO
obtained as a fine crystalline powder, intermediate between
oxalic acid and oxamide. Its ammonium salt is obtained by
boiling oxamide with ammonia.
[1913 Webster] |
NH2COOC2H5
(gcide) | Urethane \U*reth"ane\, n. [F. ur['e]thane. See Urea; Ether.]
1. (Org. Chem.) A white crystalline substance,
NH2.CO.OC2H5, produced by the action of ammonia on ethyl
carbonate or by heating urea nitrate and ethyl alcohol. It
is used as a hypnotic, antipyretic, and antispasmodic.
Hence, any ester of carbamic acid.
[Webster 1913 Suppl.]
2. same as polyurethane.
[PJC] |
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