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Index Isomer

An isomer (from Greek ἰσομερής, isomerès; isos. [1]

96 relations: Alcohol, Ammonium cyanate, Amphetamine, Anti-inflammatory, Biochemistry, Bond energy, Bronchodilator, Caffeine, Cahn–Ingold–Prelog priority rules, Carbon, Catenane, ChemComm, Chemical compound, Chemical formula, Chemical structure, Chiral resolution, Chirality (chemistry), Chromatography, Cis–trans isomerism, Cisplatin, Conformational isomerism, Coordination complex, Cyanate, Cyclohexane conformation, Diastereomer, DNA, Double bond, E-Z notation, Electromerism, Enantiomer, Enantioselective synthesis, Enzyme, Ernest L. Eliel, Ether, Food chemistry, Friedrich Wöhler, Fulminate, Fumaric acid, Functional group, Hydrocarbon, Hydrogen, Hydroxy group, International Union of Pure and Applied Chemistry, Intramolecular force, Isopropyl alcohol, Isotope, Isotopomers, Italic type, Jöns Jacob Berzelius, Journal of Chemical Education, ..., Justus von Liebig, Ligand isomerism, Linkage isomerism, Louis Pasteur, Maleic acid, Medicinal chemistry, Methamphetamine, Methoxyethane, Methyl group, Mirror image, Molecule, Nuclear isomer, Nuclear physics, Octahedral molecular geometry, Optical rotation, Organometallic chemistry, Oxygen, Phenethylamine, Phentermine, Phenyl group, Polarization (waves), Propadiene, Propanol, Propyne, Rearrangement reaction, Silver cyanate, Silver fulminate, Spin (physics), Spin isomers of hydrogen, Square planar molecular geometry, Stereocenter, Stereoisomerism, Structural isomer, Tartaric acid, Tautomer, Theobromine, Theophylline, Topoisomer, Topoisomerase, Topology, Triple bond, Urea, Vasodilation, Vitamer, Xanthine, 1-Propanol. Expand index (46 more) »


In chemistry, an alcohol is any organic compound in which the hydroxyl functional group (–OH) is bound to a carbon.

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Ammonium cyanate

Ammonium cyanate is an inorganic compound with the formula NH4OCN.

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Amphetamine (contracted from) is a potent central nervous system (CNS) stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD), narcolepsy, and obesity.

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Anti-inflammatory, or antiinflammatory, refers to the property of a substance or treatment that reduces inflammation or swelling.

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Biochemistry, sometimes called biological chemistry, is the study of chemical processes within and relating to living organisms.

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Bond energy

In chemistry, bond energy (E) or bond enthalpy (H) is the measure of bond strength in a chemical bond.

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A bronchodilator is a substance that dilates the bronchi and bronchioles, decreasing resistance in the respiratory airway and increasing airflow to the lungs.

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Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class.

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Cahn–Ingold–Prelog priority rules

The Cahn–Ingold–Prelog (CIP) sequence rules, named for organic chemists Robert Sidney Cahn, Christopher Kelk Ingold, and Vladimir Prelog — alternatively termed the CIP priority rules, system, or conventions — are a standard process used in organic chemistry to completely and unequivocally name a stereoisomer of a molecule.

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Carbon (from carbo "coal") is a chemical element with symbol C and atomic number 6.

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A catenane is a mechanically-interlocked molecular architecture consisting of two or more interlocked macrocycles, i.e. a molecule contaning two or more interwined rings.

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ChemComm (or Chemical Communications), formerly known as Journal of the Chemical Society D: Chemical Communications (1969–1971), Journal of the Chemical Society, Chemical Communications (1972–1995), is a peer-reviewed scientific journal published by the Royal Society of Chemistry.

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Chemical compound

A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) composed of atoms from more than one element held together by chemical bonds.

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Chemical formula

A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.

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Chemical structure

A chemical structure determination includes a chemist's specifying the molecular geometry and, when feasible and necessary, the electronic structure of the target molecule or other solid.

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Chiral resolution

Chiral resolution in stereochemistry is a process for the separation of racemic compounds into their enantiomers.

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Chirality (chemistry)

Chirality is a geometric property of some molecules and ions.

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Chromatography is a laboratory technique for the separation of a mixture.

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Cis–trans isomerism

Cis–trans isomerism, also known as geometric isomerism or configurational isomerism, is a term used in organic chemistry.

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Cisplatin is a chemotherapy medication used to treat a number of cancers.

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Conformational isomerism

In chemistry, conformational isomerism is a form of stereoisomerism in which the isomers can be interconverted just by rotations about formally single bonds (refer to figure on single bond rotation).

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Coordination complex

In chemistry, a coordination complex consists of a central atom or ion, which is usually metallic and is called the coordination centre, and a surrounding array of bound molecules or ions, that are in turn known as ligands or complexing agents.

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The cyanate ion is an anion with the chemical formula written as − or −. In aqueous solution it acts as a base, forming isocyanic acid, HNCO.

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Cyclohexane conformation

A cyclohexane conformation is any of several three-dimensional shapes that a cyclohexane molecule can assume while maintaining the integrity of its chemical bonds.

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Diastereomers (sometimes called diastereoisomers) are a type of a stereoisomer.

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Deoxyribonucleic acid (DNA) is a thread-like chain of nucleotides carrying the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.

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Double bond

A double bond in chemistry is a chemical bond between two chemical elements involving four bonding electrons instead of the usual two.

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E-Z notation

E-Z configuration, or the E-Z convention, is the IUPAC preferred method of describing the absolute stereochemistry of double bonds in organic chemistry.

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Electromerism is a type of isomerism between a pair of molecules (electromers, electro-isomers) differing in the way electrons are distributed among the atoms and the connecting chemical bonds.

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In chemistry, an enantiomer, also known as an optical isomer (and archaically termed antipode or optical antipode), is one of two stereoisomers that are mirror images of each other that are non-superposable (not identical), much as one's left and right hands are the same except for being reversed along one axis (the hands cannot be made to appear identical simply by reorientation).

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Enantioselective synthesis

Enantioselective synthesis, also called asymmetric synthesis, is a form of chemical synthesis.

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Enzymes are macromolecular biological catalysts.

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Ernest L. Eliel

Ernest Ludwig Eliel (December 28, 1921 – September 18, 2008) was an organic chemist born in Cologne, Germany.

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Ethers are a class of organic compounds that contain an ether group—an oxygen atom connected to two alkyl or aryl groups.

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Food chemistry

Food chemistry is the study of chemical processes and interactions of all biological and non-biological components of foods.

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Friedrich Wöhler

Friedrich Wöhler (31 July 1800 – 23 September 1882) was a German chemist, best known for his synthesis of urea, but also the first to isolate several chemical elements.

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Fulminates are chemical compounds which include the fulminate ion.

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Fumaric acid

Fumaric acid or trans-butenedioic acid is the chemical compound with the formula HO2CCH.

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Functional group

In organic chemistry, functional groups are specific substituents or moieties within molecules that are responsible for the characteristic chemical reactions of those molecules.

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In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon.

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Hydrogen is a chemical element with symbol H and atomic number 1.

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Hydroxy group

A hydroxy or hydroxyl group is the entity with the formula OH.

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International Union of Pure and Applied Chemistry

The International Union of Pure and Applied Chemistry (IUPAC) is an international federation of National Adhering Organizations that represents chemists in individual countries.

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Intramolecular force

An intramolecular force is any force that binds together the atoms making up a molecule or compound, not to be confused with intermolecular forces, which are the forces present between molecules.

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Isopropyl alcohol

Isopropyl alcohol (IUPAC name propan-2-ol; commonly called isopropanol) is a compound with the chemical formula C3H8O.

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Isotopes are variants of a particular chemical element which differ in neutron number.

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Isotopomers or isotopic isomers are isomers with isotopic atoms, having the same number of each isotope of each element but differing in their positions.

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Italic type

In typography, italic type is a cursive font based on a stylized form of calligraphic handwriting.

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Jöns Jacob Berzelius

Baron Jöns Jacob Berzelius (20 August 1779 – 7 August 1848), named by himself and contemporary society as Jacob Berzelius, was a Swedish chemist.

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Journal of Chemical Education

The Journal of Chemical Education is a monthly peer-reviewed academic journal available in both print and electronic versions.

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Justus von Liebig

Justus Freiherr von Liebig (12 May 1803 – 18 April 1873) was a German chemist who made major contributions to agricultural and biological chemistry, and was considered the founder of organic chemistry.

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Ligand isomerism

Ligand isomerism is a type of structural isomerism which arises from the presence of ligands which can adopt different isomeric forms.

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Linkage isomerism

Linkage isomerism is the existence of coordination compounds that have the same composition differing with the connectivity of the metal to a ligand.

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Louis Pasteur

Louis Pasteur (December 27, 1822 – September 28, 1895) was a French biologist, microbiologist and chemist renowned for his discoveries of the principles of vaccination, microbial fermentation and pasteurization.

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Maleic acid

Maleic acid or cis-butenedioic acid is an organic compound that is a dicarboxylic acid, a molecule with two carboxyl groups.

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Medicinal chemistry

Medicinal chemistry and pharmaceutical chemistry are disciplines at the intersection of chemistry, especially synthetic organic chemistry, and pharmacology and various other biological specialties, where they are involved with design, chemical synthesis and development for market of pharmaceutical agents, or bio-active molecules (drugs).

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Methamphetamine (contracted from) is a potent central nervous system (CNS) stimulant that is mainly used as a recreational drug and less commonly as a second-line treatment for attention deficit hyperactivity disorder and obesity.

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Methoxyethane, also known as ethyl methyl ether, is an ethyl group with a bonded methoxy.

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Methyl group

A methyl group is an alkyl derived from methane, containing one carbon atom bonded to three hydrogen atoms — CH3.

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Mirror image

A mirror image (in a plane mirror) is a reflected duplication of an object that appears almost identical, but is reversed in the direction perpendicular to the mirror surface.

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A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.

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Nuclear isomer

A nuclear isomer is a metastable state of an atomic nucleus caused by the excitation of one or more of its nucleons (protons or neutrons).

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Nuclear physics

Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions.

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Octahedral molecular geometry

In chemistry, octahedral molecular geometry describes the shape of compounds with six atoms or groups of atoms or ligands symmetrically arranged around a central atom, defining the vertices of an octahedron.

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Optical rotation

Optical rotation or optical activity (sometimes referred to as rotary polarization) is the rotation of the plane of polarization of linearly polarized light as it travels through certain materials.

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Organometallic chemistry

Organometallic chemistry is the study of organometallic compounds, chemical compounds containing at least one chemical bond between a carbon atom of an organic molecule and a metal, including alkaline, alkaline earth, and transition metals, and sometimes broadened to include metalloids like boron, silicon, and tin, as well.

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Oxygen is a chemical element with symbol O and atomic number 8.

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Phenethylamine (PEA) is an organic compound, natural monoamine alkaloid, and trace amine which acts as a central nervous system stimulant in humans.

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Phentermine (contracted from phenyl-tertiary-butylamine), also known as α,α-dimethylphenethylamine, is a psychostimulant drug of the substituted amphetamine chemical class, with pharmacology similar to amphetamine.

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Phenyl group

In organic chemistry, the phenyl group or phenyl ring is a cyclic group of atoms with the formula C6H5.

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Polarization (waves)

Polarization (also polarisation) is a property applying to transverse waves that specifies the geometrical orientation of the oscillations.

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Propadiene is the organic compound with the formula H2C.

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There are two isomers of propanol.

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Propyne (methylacetylene) is an alkyne with the chemical formula H3C≡CH.

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Rearrangement reaction

A rearrangement reaction is a broad class of organic reactions where the carbon skeleton of a molecule is rearranged to give a structural isomer of the original molecule.

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Silver cyanate

Silver cyanate is a chemical compound; it is the cyanate salt of silver.

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Silver fulminate

Silver fulminate (AgCNO) is the highly explosive silver salt of fulminic acid.

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Spin (physics)

In quantum mechanics and particle physics, spin is an intrinsic form of angular momentum carried by elementary particles, composite particles (hadrons), and atomic nuclei.

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Spin isomers of hydrogen

Molecular hydrogen occurs in two isomeric forms, one with its two proton nuclear spins aligned parallel (orthohydrogen), the other with its two proton spins aligned antiparallel (parahydrogen).

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Square planar molecular geometry

The square planar molecular geometry in chemistry describes the stereochemistry (spatial arrangement of atoms) that is adopted by certain chemical compounds.

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In a molecule, a stereocenter is a particular instance of a stereogenic element that is geometrically a point.

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In stereochemistry, stereoisomers are isomeric molecules that have the same molecular formula and sequence of bonded atoms (constitution), but differ in the three-dimensional orientations of their atoms in space.

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Structural isomer

Structural isomerism, or constitutional isomerism (per IUPAC), is a form of isomerism in which molecules with the same molecular formula have different bonding patterns and atomic organization, as opposed to stereoisomerism, in which molecular bonds are always in the same order and only spatial arrangement differs.

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Tartaric acid

Tartaric acid is a white crystalline organic acid that occurs naturally in many fruits, most notably in grapes, but also in bananas, tamarinds and citrus.

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Tautomers are constitutional isomers of organic compounds that readily interconvert.

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Theobromine, formerly known as xantheose, is a bitter alkaloid of the cacao plant, with the chemical formula C7H8N4O2.

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Theophylline, also known as 1,3-dimethylxanthine, is a methylxanthine drug used in therapy for respiratory diseases such as chronic obstructive pulmonary disease (COPD) and asthma under a variety of brand names.

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Topoisomers or topological isomers are molecules with the same chemical formula and stereochemical bond connectivities but different topologies.

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Topoisomerases are enzymes that participate in the overwinding or underwinding of DNA.

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In mathematics, topology (from the Greek τόπος, place, and λόγος, study) is concerned with the properties of space that are preserved under continuous deformations, such as stretching, crumpling and bending, but not tearing or gluing.

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Triple bond

A triple bond in chemistry is a chemical bond between two atoms involving six bonding electrons instead of the usual two in a covalent single bond.

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Urea, also known as carbamide, is an organic compound with chemical formula CO(NH2)2.

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Vasodilation is the widening of blood vessels.

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A vitamer of a particular vitamin is any of a number of chemical compounds, generally having a similar molecular structure, each of which shows vitamin-activity in a vitamin-deficient biological system.

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Xanthine (or; archaically xanthic acid) (3,7-dihydropurine-2,6-dione), is a purine base found in most human body tissues and fluids and in other organisms.

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1-Propanol is a primary alcohol with the formula CH3CH2CH2OH (sometimes represented as PrOH or n-PrOH).

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[1] https://en.wikipedia.org/wiki/Isomer

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