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Chemical compounds with the same molecular formula but different atomic arrangements
distinct arrangements of atoms in space. Isomerism refers to the existence or possibility of isomers. Isomers do not necessarily share similar chemical
Isomer
Pairs of molecules with same chemical formula showing different spatial orientations
Cis–trans isomerism, also known as geometric isomerism, describes certain arrangements of atoms within molecules. The prefixes "cis" and "trans" are from
Cis–trans_isomerism
When molecules have the same atoms and bond structure but differ in 3D orientation
In stereochemistry, stereoisomerism, or spatial isomerism, is a form of isomerism in which molecules have the same molecular formula and sequence of bonded
Stereoisomerism
Metastable excited state of a nuclide
A nuclear isomer is a metastable state of an atomic nucleus in which one or more nucleons (protons or neutrons) occupy excited state levels (higher energy
Nuclear_isomer
Presence of structurally isomeric ligands in a coordination complex
In coordination chemistry, ligand isomerism is a type of structural isomerism in coordination complexes which arises from the presence of ligands which
Ligand_isomerism
Coordination compounds of the same composition but differing connectivity to ligands
In chemistry, linkage isomerism or ambidentate isomerism is a form of structural isomerism in which certain coordination compounds have the same composition
Linkage_isomerism
Stereoisomerism found in bridged-ring compounds
In organic chemistry, endo–exo isomerism is a special type of stereoisomerism found in organic compounds with a substituent on a bridged ring system.
Endo–exo_isomerism
Position of molecules attached to benzene rings
simple disubstituted arenes, the three isomers tend to have rather similar boiling points. However, the para isomer usually has the highest melting point
Arene_substitution_pattern
Geometric property of some molecules and ions
to be chiral depends on whether its chiral conformations are persistent isomers that could be isolated as separated enantiomers, at least in principle
Chirality_(chemistry)
Chemical compounds with the same atoms but arranged and connected differently
In chemistry, a structural isomer (or constitutional isomer in the IUPAC nomenclature) of a compound is a compound that contains the same number and type
Structural_isomer
Terpene hydrocarbon
molecule, and most biological sources produce just one enantiomer (isomer). The (+)-isomer, d-limonene, which is the (R)-enantiomer, occurs more commonly
Limonene
Compound with a metal center bound to ligands
isomerism, solvate or hydrate isomerism, linkage isomerism and coordination isomerism. Ionisation isomerism – the isomers give different ions in solution
Coordination_complex
Coordination isomerism is a form of structural isomerism in which the composition of the coordination complex ion varies. In a coordination isomer the total
Coordination_isomerism
Stereoisomers that are nonsuperposable mirror images of each other
enantiomer (/ɪˈnænti.əmər, ɛ-, -oʊ-/ ih-NAN-tee-ə-mər), also known as an optical isomer, antipode, or optical antipode, is one of a pair of molecular entities which
Enantiomer
Hydrocarbon compound with the formula C8H18
CH3(CH2)6CH3. Octane has many structural isomers that differ by the location of branching in the carbon chain. One of these isomers, 2,2,4-trimethylpentane (commonly
Octane
Element in fossils
Isomer (Greek isos = "equal", méros = "part") is an element of transverse body articulation of the bilateral fossil animals of the phylum Proarticulata
Isomer_(Proarticulata)
Bombarding atomic nuclei to give off very short-wavelength light
of gamma rays from excited nuclei, usually involving a specific nuclear isomer. It is analogous to conventional fluorescence, which is defined as the emission
Induced_gamma_emission
Systematic naming of chemical compounds
(IUPAC). IUPAC Nomenclature ensures that each compound (and its various isomers) have only one formally accepted name known as the preferred IUPAC name
Chemical_nomenclature
Transformation of the chemical structure of a molecule or ion
a molecule, polyatomic ion or molecular fragment is transformed into an isomer with a different chemical structure. Enolization is an example of isomerization
Isomerization
Optically inactive isomer in a set of stereoisomers
A meso compound or meso isomer is an optically inactive isomer in a set of stereoisomers, at least two of which are optically active. This means that despite
Meso_compound
Chemical compound
trioxide (CO3) is an unstable oxide of carbon (an oxocarbon). The possible isomers of carbon trioxide include ones with molecular symmetry point groups Cs
Carbon_trioxide
Rotation of the plane of linearly polarized light as it travels through a chiral material
as glucose, in solution. In fact one name for D-glucose (the biological isomer), is dextrose, referring to the fact that it causes linearly polarized light
Optical_rotation
Chemical compound
HClC=C(H)CF3. The compound exists as E- (trans-) and Z- (cis-) isomers. The cis- isomer of this colorless gas is of interest as a more environmentally
1-Chloro-3,3,3-trifluoropropene
1-Chloro-3,3,3-trifluoropropene
Type of symmetry in molecules
In chemistry, axial chirality is a special case of chirality in which a molecule contains two pairs of chemical groups in a non-planar arrangement about
Axial_chirality
Family of chemical compounds C4H8
prohibited. Among the molecules which have the chemical formula C4H8 four isomers are alkenes. All four of these hydrocarbons have four carbon atoms and
Butene
Chemical compound (C6H14)
and are often used in large-scale operations that don't require a single isomer (e.g., as cleaning solvent or for chromatography). In industry, hexanes
Hexane
half-lives that are less than ten minutes. One isotope, 229Th, has a nuclear isomer (or metastable state) with a remarkably low excitation energy, recently
Isotopes_of_thorium
This is the list of the 75 isomers of decane. Decane 2-Methylnonane 3-Methylnonane 4-Methylnonane 5-Methylnonane 3-Ethyloctane 4-Ethyloctane 2,2-Dimethyloctane
List_of_isomers_of_decane
Chemical compound
formula (CH3)3CCH2CH(CH3)2. It is one of several isomers of octane (C8H18). This particular isomer is the standard 100 point on the octane rating scale
2,2,4-Trimethylpentane
coordination chemistry, hydration isomerism is a kind of isomerism that is observed in some solids. Hydration isomers have identical formula but differ
Hydration_isomerism
Chemical compound
HFO-1234ze(E-isomer), is a hydrofluoroolefin that has the same chemical formula as HFO-1234ze(Z-isomer) and one of many tetrafluoropropene isomers. The HFO-1234ze
Trans-1,3,3,3-Tetrafluoropropene
Trans-1,3,3,3-Tetrafluoropropene
Topoisomers or topological isomers are molecules with the same chemical formula and stereochemical bond connectivities but different topologies. Examples
Topoisomer
Type of organic molecule with a linear structure
ring isomers, that is, both acyclic and cyclic. For those with 4 or more carbons, the linear forms can have straight-chain or branched-chain isomers. The
Open-chain_compound
Chemical compound
The two compounds are isomers, each being colorless liquids with a sweet odor. It can exist as either of two geometric isomers, cis-1,2-dichloroethene
1,2-Dichloroethylene
Molecular geometry
the stoichiometries and isomerism in coordination compounds. His insight allowed chemists to rationalize the number of isomers of coordination compounds
Octahedral_molecular_geometry
John (July 7, 1971). "Amphetamine, Methamphetamine, and Optical Isomers" (PDF). Isomer Design. Bureau of Narcotics and Dangerous Drugs. Archived (PDF)
List of Schedule II controlled substances (U.S.)
List_of_Schedule_II_controlled_substances_(U.S.)
Chemical compound
Carbon tetroxide or Oxygen carbonate (in its C2v isomer) is a highly unstable oxide of carbon with formula CO 4. It was proposed as an intermediate in
Carbon_tetroxide
Aromatic diisocyanate
Three isomers are common, varying by the positions of the isocyanate groups around the rings: 2,2′-MDI, 2,4′-MDI, and 4,4′-MDI. The 4,4′ isomer is most
Methylene diphenyl diisocyanate
Methylene_diphenyl_diisocyanate
One of a pair of diastereomers
epimerization of the erythro isomers of methylphenidate to the pharmacologically preferred and lower-energy threo isomers, and undesired in vivo epimerization
Epimer
Chemical compound
PtCl2[P(C6H5)3]2. Cis- and trans isomers are known. The cis isomer is a white crystalline powder, while the trans isomer is yellow. Both isomers are square planar about
Bis(triphenylphosphine)platinum chloride
Bis(triphenylphosphine)platinum_chloride
Index of chemical compounds with the same name
two stereoisomers of 1,2-diphenylethene: (E)-Stilbene (trans isomer) (Z)-Stilbene (cis isomer) Stilbenoids, a class of molecules found in plants 1,1-Diphenylethylene
Stilbene
Organic acid found in many fruits
is available naturally, it is cheaper than its enantiomer and the meso isomer. The dextro and levo prefixes are archaic terms. Modern textbooks refer
Tartaric_acid
Various molecular structures formed only by rotation about single bonds
Atropisomers are conformational isomers which can be separated due to restricted rotation. The equilibrium between conformational isomers can be observed using
Rotamer
Organic compound
1984, ISBN 0-8493-0303-6. Datasheet 2,6 isomer Datasheet 2,5 isomer Datasheet 2,4 isomer Datasheet 2,3 isomer Datasheet 3,4 isomer Datasheet 3,5 isomer
Xylenol
Simple sugars such as glucose and fructose
projection, two mirror-image isomers differ by having the positions of all chiral hydroxyls reversed right-to-left. Mirror-image isomers are chemically identical
Monosaccharide
Hydrocarbon compound containing one or more C=C bonds
hydrogens less than the corresponding alkane). When n is four or more, isomers are possible, distinguished by the position and conformation of the double
Alkene
Chemical compound
exhibits cis-trans isomerism, as the tertiary fluorines atoms on the bridge carbon atoms can be either on the same side as each other (cis-isomer) or on opposite
Perfluorodecalin
Index of chemical compounds with the same name
three structural isomers: 1,2-dihydroxybenzene (the ortho isomer) is commonly known as catechol, 1,3-dihydroxybenzene (the meta isomer) is commonly known
Dihydroxybenzenes
Chemical compound
two geometric isomers that have their own separate names; the E-isomer is named geranial (trans-citral; α-citral) or citral A. The Z-isomer is named neral
Citral
Molecules which differ only in isotope composition
Paine in 1992, is used. Isotopomerism is analogous to constitutional isomerism or stereoisomerism of different elements in a structure. Depending on
Isotopologue
Chemical compound
carbonyl group in the C4N2 ring. Two isomers are possible: 2-quinazolinone and 4-quinazolinone, with the 4-isomer being the more common. These compounds
Quinazolinone
3-Methylthiofentanyl, Para-fluorofentanyl, and Thiofentanyl into Schedule I" (PDF). Isomer Design. Drug Enforcement Administration. Archived from the original (PDF)
List of Schedule I controlled substances (U.S.)
List_of_Schedule_I_controlled_substances_(U.S.)
Covalent bond between amino acids in a protein chain
either the cis or trans isomers. In the unfolded state of proteins, the peptide groups are free to isomerize and adopt both isomers; however, in the folded
Peptide_bond
(2,4,5-TMA) (isomer of TMA), Aleph-2 (isomer of 2C-T-4), and Aleph-4 (isomer of 2C-T-7) 4Cs: Ariadne (isomer of DOET) MDxx: MBDB (isomer of MDEA Others:
Legal status of psychedelic drugs in the United States
Legal_status_of_psychedelic_drugs_in_the_United_States
Chemical compound
simplest alkene exhibiting cis/trans-isomerism (also known as (E/Z)-isomerism); that is, it exists as two geometric isomers cis-2-butene ((Z)-but-2-ene) and
2-Butene
Chemical compound
2-Dichlorobenzene, or orthodichlorobenzene (ODCB), is an aryl chloride and isomer of dichlorobenzene with the formula C6H4Cl2. This colourless liquid is poorly
1,2-Dichlorobenzene
Gamma 'bomb' debate, 1997 to 2009
rapid energy releases, via gamma-ray emission, from 178m2Hf, a nuclear isomer of hafnium. The energy release per event is 5 orders of magnitude (100,000
Hafnium_controversy
Type of saturated hydrocarbon compound
3-tetramethylbutane C9: 35 isomers of nonane C10: 75 isomers of decane C11: 159 isomers of undecane C12: 355 isomers of dodecane C20: 366,319 isomers of eicosane (icosane)
Alkane
Chemical compound
Depending on which isomer is used, it can have either convulsant or anticonvulsant actions. The different pharmacological profile between isomers is thought to
Diberal
Chemical compound
derivative of norbornene. Nadic anhydride exhibits endo-exo isomerism. In the exo isomer, the acid anhydride group points in the same direction towards
Nadic_anhydride
Spectroscopic technique
needed] Typically, three types of nuclear interactions may be observed: the isomer shift due to differences in nearby electron densities (also called the chemical
Mössbauer_spectroscopy
Chemical compound
is dimethylsulfoxide. Both cis and trans isomers are known, but the cis isomer is more common. The cis isomer is a yellow, air-stable solid that is soluble
Dichlorotetrakis(dimethylsulfoxide)ruthenium(II)
Dichlorotetrakis(dimethylsulfoxide)ruthenium(II)
Difenoxin in Combination With Atropine Sulfate Into Schedules IV and V" (PDF). Isomer Design. Drug Enforcement Administration. Archived (PDF) from the original
List of Schedule IV controlled substances (U.S.)
List_of_Schedule_IV_controlled_substances_(U.S.)
Type of notational prefix in chemical nomenclature
are not taken into account in the alphabetical sorting. See: cis–trans isomerism The descriptors cis (Latin, on this side of) and trans (Latin, over, beyond)
Descriptor_(chemistry)
Artificial nuclides with atomic number of 96 but with different mass numbers
000 years. The longest-lived known isomer is 246mCm with a half-life of 1.12 seconds. mCm – Excited nuclear isomer. ( ) – Uncertainty (1σ) is given in
Isotopes_of_curium
Atomic spectral line shift
called isomer shift) is the shift on atomic spectral lines and gamma spectral lines, which occurs as a consequence of replacement of one nuclear isomer by
Isomeric_shift
Medical condition
cardiovascular anomalies, also known as Ivemark syndrome and right atrial isomerism, is an example of a heterotaxy syndrome. These uncommon congenital disorders
Asplenia with cardiovascular anomalies
Asplenia_with_cardiovascular_anomalies
Chemical compound (C7H16)
mixture of different isomers with greatly differing ratings, and do not give as precise a zero point. Heptane has nine isomers, or eleven if enantiomers
Heptane
Chemical compound
of plants. It exists as both a cis and a trans isomer, although the latter is more common. The cis-isomer is called allocinnamic acid. Cinnamic acid is
Cinnamic_acid
Group of synthetic polymers, including cis-1,4-polyisoprene
variety of applications, such as making tires. The trans isomer, which is much harder than the cis isomer, has also seen significant use in the past. It too
Polyisoprene
244Md to 260Md, and 10 isomers. The longest-lived isotope is 258Md with a half-life of 51.6 days, and the longest-lived isomer is 258mMd with a half-life
Isotopes_of_mendelevium
Chemical compound
antitussive. It is an optical isomer of dextropropoxyphene. The racemic mixture is called propoxyphene. Only the dextro-isomer (dextropropoxyphene) has an
Levopropoxyphene
Isomer/derivative of butane
methylpropane, is a chemical compound with molecular formula HC(CH3)3. An isomer of butane, it is a colorless, odorless gas. Isobutane is the simplest alkane
Isobutane
L-isomer of glucose
O=CH[CH(OH)]5H, specifically one of the aldohexose monosaccharides. As the l-isomer of glucose, it is the enantiomer of the more common d-glucose. l-Glucose
L-Glucose
Chemical compound
compound is produced as a mixture of three isomers by the hydrogenation of methylenedianiline. These isomers are, in decreasing order of their yield from
4,4'-Diaminodicyclohexylmethane
4,4'-Diaminodicyclohexylmethane
Chemical compound
with only about 2% of the alternative (2R,3S) and (2S,3R) isomers. However, this pair of isomers can be produced when the reduction is carried out using
Paclobutrazol
Chemical compound family ( C4H9OH)
formula of C4H9OH, which occurs in five isomeric structures (four structural isomers), from a straight-chain primary alcohol to a branched-chain tertiary alcohol;
Butanol
Liquid state of the element hydrogen
liquid for some time in thermally insulated containers. There are two spin isomers of hydrogen. Room temperature hydrogen is 75% orthohydrogen. At cryogenic
Liquid_hydrogen
Chemical compound
(glycol). It exists as three stereoisomers, a chiral pair and the meso isomer. All are colorless liquids. Applications include precursors to various plastics
2,3-Butanediol
Synthetic Opioid pain medication
forms: (1R,2R)-isomer (1S,2S)-isomer (1R,2S)-isomer (1S,2R)-isomer The synthetic pathway leads to the racemate (1:1 mixture) of (1R,2R)-isomer and the (1S
Tramadol
Mixture with equal amounts of left- and right-handed chiral isomers
acid, which Louis Pasteur found to be a mixture of the two enantiomeric isomers of tartaric acid. He manually separated the crystals of a mixture, starting
Racemic_mixture
Chemical compound
be obtained too, and it is more reactive than the trans form. The trans isomer is colorless and soluble in water and insoluble in ethanol and ether. Sodium
Sodium_hyponitrite
Chemical compound
bottom ring of the structure. It is typically available as a mixture of isomers, fluorescein 5-isothiocyanate (5-FITC) and fluorescein 6-isothiocyanate
Fluorescein_isothiocyanate
Group of isomeric chemical compounds which are strong bases
benzene ring. With the chemical formula C 6H 4C2− 4, three positional isomers are possible, differing in the relative positions of the two substituents
Diethynylbenzene_dianion
The following is a list of straight-chain alkanes, the total number of isomers of each (including branched chains), and their common names, sorted by
List of straight-chain alkanes
List_of_straight-chain_alkanes
Chemical compound
formula C6H4(OH)2. It is one of three isomeric benzenediols, the 1,3-isomer (or meta-isomer). Resorcinol crystallizes from benzene as colorless needles that
Resorcinol
Chemical compound
nitrogen atoms with molecular formula C2H3N3. Triazoles exhibit substantial isomerism, depending on the positioning of the nitrogen atoms within the ring. Many
Triazole
Chemical compound
crystallized together with C60. Isomers of dicobalt octacarbonyl Bridged C2v isomer non-bridged D3d isomer nonbridged D2d isomer Dicobalt octacarbonyl is reductively
Dicobalt_octacarbonyl
Polychlorinated flame retardant
equivalent of cyclooctadiene. The syn and anti isomer are formed in the approximate ratio of 1:3. syn isomer anti isomer Dechlorane plus was first found in the
Dechlorane_plus
Group of chemical compounds
Picoline refers to any of three isomers of methylpyridine (CH3C5H4N). They are all colorless liquids with a characteristic smell similar to that of pyridine
Picoline
Chemical compound
The commercial product typically exists as a mixture of 70% (Z)-isomer and 30% (E)-isomer. Phosphamidon is very highly toxic to mammals and is listed as
Phosphamidon
Organic compound
ion (in solution). Fumaric acid is the trans isomer of butenedioic acid, while maleic acid is the cis isomer. It is produced in eukaryotic organisms from
Fumaric_acid
Molecules with same isotopes in different positions
Isotopomers or isotopic isomers are isomers which differ by isotopic substitution, and which have the same number of atoms of each isotope but in a different
Isotopomer
Chemical compound
any of 24894 theoretically possible structural isomers, or to a mixture thereof. The unbranched isomer is normal or n-heptadecane, CH3(CH2)15CH3. In the
Heptadecane
Dicarboxylic acid
is HO2CCH=CHCO2H. Maleic acid is the cis isomer of butenedioic acid, whereas fumaric acid is the trans isomer. Maleic acid is mainly used as a precursor
Maleic_acid
Chemical compound
(trans isomer) offers less steric repulsion to the preceding Cα atom than does the following Cα atom (cis isomer). By contrast, the cis and trans isomers of
Proline
Central nervous system stimulant
Four isomers of methylphenidate are possible, since the molecule has two chiral centers. One pair of threo isomers and one pair of erythro isomers are
Methylphenidate
Chemical compound
of isomers were significant in the development of the area of coordination chemistry. The chiral cis isomer is obtained by heating the trans isomer. Both
Trans-Dichlorobis(ethylenediamine)cobalt(III) chloride
Trans-Dichlorobis(ethylenediamine)cobalt(III)_chloride
Flammable organic fuel (C4H10)
the formula C4H10. Butane exists as two isomers, n-butane, CH3CH2CH2CH3 and iso-butane, (CH3)3CH. Both isomers are highly flammable, colorless, easily
Butane
Alkane with 5 carbon atoms C5H12
three structural isomers, or to a mixture of them: in the IUPAC nomenclature, however, pentane means exclusively the n-pentane isomer, in which case pentanes
Pentane
ISOMER
ISOMER
ISOMER
ISOMER
Boy/Male
Hindu, Indian
Little Shinning Spark
Boy/Male
Tamil
Gaurinandan | கௌரிநஂதந
Lord Ganesh (Son of Gauri)
Boy/Male
Indian
Good habit, Plus point
Boy/Male
Dutch
Gift from God.
Female
English
Feminine form of French Georges, GEORGINE means "earth-worker, farmer."
Boy/Male
Indian
Rich, Wealthy, Chief
Girl/Female
Tamil
Jasodhara | ஜ஼ஸோதரா
(Mother of Lord Buddha)
Boy/Male
Indian
Gift of khuda (Allah)
Girl/Female
Hungarian
meaning consecrated to God.
Girl/Female
Tamil
Saatvika | ஸாதà¯à®µà®¿à®•Â
Goddess Durga, Calm
ISOMER
ISOMER
ISOMER
ISOMER
ISOMER
n.
A bitter white crystalline substance obtained from the saccharinates and regarded as the lactone of saccharinic acid; -- so called because formerly supposed to be isomeric with cane sugar (saccharose).
n.
Any one of a series of isomeric hydrocarbons of pleasant aromatic odor, occurring especially in coniferous plants and represented by oil of turpentine, but including also certain hydrocarbons found in some essential oils.
n.
An unfermentable sugar, isomeric with glucose, found in the ripe berries of the rowan tree, or sorb, and extracted as a sweet white crystalline substance; -- called also mountain-ash sugar.
n.
An alkaloid found with hyoscyamine (with which it is also isomeric) in henbane, and extracted as a white, amorphous, semisolid substance.
n.
An isomer.
n.
A body or compound which is isomeric with another body or compound; a member of an isomeric series.
a.
Having the same percentage composition; -- said of two or more different substances which contain the same ingredients in the same proportions by weight, often used with with. Specif.: (a) Polymeric; i. e., having the same elements united in the same proportion by weight, but with different molecular weights; as, acetylene and benzine are isomeric (polymeric) with each other in this sense. See Polymeric. (b) Metameric; i. e., having the same elements united in the same proportions by weight, and with the same molecular weight, but which a different structure or arrangement of the ultimate parts; as, ethyl alcohol and methyl ether are isomeric (metameric) with each other in this sense. See Metameric.
n.
An alkaloid found in henbane (Hyoscyamus niger), and regarded as its active principle. It is also found with other alkaloids in the thorn apple and deadly nightshade. It is extracted as a white crystalline substance, with a sharp, offensive taste. Hyoscyamine is isomeric with atropine, is very poisonous, and is used as a medicine for neuralgia, like belladonna. Called also hyoscyamia, duboisine, etc.
a.
Pertaining to, or designating, an isomeric modification of ricinoleic acid obtained as a white crystalline solid.
n.
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.
n.
Sometimes, an isomeric radical used to designate certain compounds which are really related to butylene.
a.
Of, pertaining to, or designating, any one of three isomeric crystalline acids, C9H10ON.CO2H, which are toluyl derivatives of glycocoll.
n.
A carbohydrate isomeric with dextrin, obtained from quitch grass (Agropyrum, formerly Triticum, repens) as a white amorphous substance.
n.
A gaseous hydrocarbon, C3H6, isomeric with propylene and obtained from it indirectly. It is the base of a series of compounds analogous to the aromatic hydrocarbons.
n.
A sugarlike substance, isomeric with mannite and dulcite, found with sorbin in the ripe berries of the sorb, and extracted as a sirup or a white crystalline substance.
n.
The state, quality, or relation, of two or more isomeric substances.
n.
A variety of sugar, isomeric with sucrose, found in the tubers of the Jerusalem artichoke (Helianthus tuberosus), in the dahlia, and other Compositae.
n.
A common variety of sugar found in the juices of many plants, as the sugar cane, sorghum, sugar maple, beet root, etc. It is extracted as a sweet, white crystalline substance which is valuable as a food product, and, being antiputrescent, is largely used in the preservation of fruit. Called also saccharose, cane sugar, etc. By extension, any one of the class of isomeric substances (as lactose, maltose, etc.) of which sucrose proper is the type.
n.
Isomorphism between substances that are isomeric.
n.
A colorless crystalline substance, isomeric with piperonal, but having weak acid properties. It is extracted from sandalwood.