List Of Compounds With Carbon Numbers 25–29
This is a partial list of molecules that contain 25 to 29 carbon atoms. C25 C26 C27 C28 C29 See also * Carbon number In organic chemistry, the carbon number of a compound is the number of carbon atoms in each molecule.Nava Dayan, Lambros Kromidas (ed.) ''Formulating, Packaging, and Marketing of Natural Cosmetic Products'' John Wiley & Sons, 2011; ; page 218 Th ... {{DEFAULTSORT:Dictionary Of Chemical Formulas C25-C29 C25 ...
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Molecule
A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions which satisfy this criterion. In quantum physics, organic chemistry, and biochemistry, the distinction from ions is dropped and ''molecule'' is often used when referring to polyatomic ions. A molecule may be homonuclear, that is, it consists of atoms of one chemical element, e.g. two atoms in the oxygen molecule (O2); or it may be heteronuclear, a chemical compound composed of more than one element, e.g. water (two hydrogen atoms and one oxygen atom; H2O). In the kinetic theory of gases, the term ''molecule'' is often used for any gaseous particle regardless of its composition. This relaxes the requirement that a molecule contains two or more atoms, since the noble gases are individual atoms. Atoms and complexes connected by non-covalent interactions, such as hydrogen bonds or ionic bonds, are typically not consid ...
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Acetildenafil
Acetildenafil (hongdenafil) is a synthetic drug which acts as a phosphodiesterase inhibitor. It is an analog of sildenafil (Viagra) which has been detected in numerous different brands of supposedly "herbal" aphrodisiac products sold to boost libido and alleviate erectile dysfunction. A range of designer analogs of licensed PDE5 inhibitors such as sildenafil and vardenafil have been detected in recent years in over-the-counter herbal aphrodisiac products, in an apparent attempt to circumvent both the legal restrictions on sale of erectile dysfunction drugs, which are prescription-only medicines in most Western countries, and the patent protection which allows sale of these drugs by competitors only with permission from the patent holders (typically, under a license from the inventors) and to introduce efficacy into otherwise ineffective herbal products. These compounds have been demonstrated to display PDE5 inhibitory activity ''in vitro'' and presumably have similar effects ...
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Hexacene
Hexacene is an aromatic compound consisting of six linearly-fused benzene rings. It is a blue-green, air-stable solid with low solubility. Hexacene is one of a series of linear polycyclic molecules created by such aromatic ring fusions, a series termed acenes—the previous in the series being pentacene (with five fused rings) and the next being heptacene Heptacene is an organic compound and a polycyclic aromatic hydrocarbon and the seventh member of the acene or polyacene family of linear fused benzene rings. This compound has long been pursued by chemists because of its potential interest in e ... (with seven). It and other acenes and their derivatives have been investigated in potential applications related to organic semiconductors. Like larger acenes, hexacene is poorly soluble, but derivatives have been prepared with improved solubility. 6,15-Bis(tri-t-butylsilylethynyl)hexacene, which melts with decomposition at 96 °C. Syntheses and structure Hexacene has be ...
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Perylene Picric Acid
Perylene or perilene is a polycyclic aromatic hydrocarbon with the chemical formula C20H12, occurring as a brown solid. It or its derivatives may be carcinogenic, and it is considered to be a hazardous pollutant. In cell membrane cytochemistry, perylene is used as a fluorescent lipid probe. It is the parent compound of a class of rylene dyes. Reactions Like other polycyclic aromatic compounds, perylene is reduced by alkali metals to give a deeply colored radical anion and a dianion. The diglyme solvates of these salts have been characterized by X-ray crystallography. Emission Perylene displays blue fluorescence. It is used as a blue-emitting dopant material in OLEDs, either pure or substituted. Perylene can be also used as an organic photoconductor. It has an absorption maximum at 434 nm, and as with all polycyclic aromatic compounds, low water solubility (1.2 x 10−5 mmol/L). Perylene has a molar absorptivity of 38,500 M−1cm−1 at 435.7 nm. Im ...
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Rubicene
Rubicene is a polycyclic aromatic hydrocarbon that consists of two benzene and an anthracene. They are each linked by two carbon–carbon bonds. Dilute solutions of rubicene emit strong yellow fluorescence. It's synthesized from fluorenone by reduction of calcium or magnesium, or it can be obtained by reacting with dihalogenated diphenylanthracene as raw material. It can also be obtained by reacting 9,10-diphenylanthracene and 3 parts of DDQ in dichloromethane Dichloromethane (DCM or methylene chloride, methylene bichloride) is an organochlorine compound with the formula . This colorless, volatile liquid with a chloroform-like, sweet odour is widely used as a solvent. Although it is not miscible with ... in the presence of triflic acid. References Further reading * Pragst, Fritz; Stoesser, Reinhard. Use of bis(1,2,4,6-tetramethyl-1,4-dihydro-4-pyridinyl) as a reducing agent for the generation of organic anion radicals in EPR spectroscopy . ''Zeitschrift fuer Chemie ...
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Ethyl Tricosanoate
Ethyl may refer to: Arts and entertainment * Cold Ethyl, a Swedish rock band * Ethyl Sinclair, a character in the ''Dinosaurs'' television show Science and technology * Ethyl group, an organic chemistry moiety * Ethyl alcohol (or ethanol) * Ethyl Corporation, a fuel additive company ** Tetraethyllead-treated gasoline See also * Ethel (other) Ethel is an English name, usually used as a feminine given name, also a surname. Ethel or ETHEL may also refer to: Places United States * Ethel, Arkansas, an unincorporated community * Ethel, Indiana, an unincorporated community * Ethel, Missi ...