High Quality Content by WIKIPEDIA articles! NNC 38-1049 is a histamine antagonist selective for the H3 subtype. It has anorectic effects in animal studies and is being researched as a potential treatment for obesity.
High Quality Content by WIKIPEDIA articles! Non-coded, non-proteinogenic or non-standard amino acids are amino acids which are not encoded in the genetic code. Despite the presence of only 22 amino acids in the genetic code (the proteinogenic amino acids), over 140 natural amino acids are know and thousands of more combinations are possible. Several non-proteinogenic amino acids are noteworthy because they are:
High Quality Content by WIKIPEDIA articles! Nonmetal, or non-metal, is a term used in chemistry when classifying the chemical elements. On the basis of their general physical and chemical properties, every element in the periodic table can be termed either a metal or a nonmetal. (A few elements with intermediate properties are referred to as metalloids).
High Quality Content by WIKIPEDIA articles! Nonylphenol is a family of closely related organic compounds, a subset of the alkylphenols. This collection of compounds is a precursor to commercially important detergents. Nonylphenol features both polar and hydrophobic subunits, the phenol and the hydrocarbon tail.
High Quality Content by WIKIPEDIA articles! NS-2359 (GSK-372,475) is a serotonin-norepinephrine-dopamine reuptake inhibitor. It was under development by GlaxoSmithKline (GSK) as an antidepressant, but was discontinued in 2009 when phase II clinical trials turned up disappointing results and did not support further effort by the company. NS-2359 was also in clinical trials for the treatment of ADHD, phase II having been completed in 2007. A trial exploring the effect of NS-2359 on cocaine-experienced individuals is currently ongoing.
High Quality Content by WIKIPEDIA articles! Nucleoside phosphoramidites are derivatives of natural or synthetic nucleosides. They are used to synthesize oligonucleotides, relatively short fragments of nucleic acid and their analogs. Nucleoside phosphoramidites were first introduced in 1981 by Beaucage and Caruthers. In order to avoid undesired side reactions, reactive hydroxy and exocyclic amino groups present in natural or synthetic nucleosides are appropriately protected. As long as a nucleoside analog contains at least one hydroxy group, the use of the appropriate protecting strategy allows one to convert that to the respective phosphoramidite and to incorporate the latter into synthetic nucleic acids. In order to be incorporated in...
High Quality Content by WIKIPEDIA articles! In physics, a nucleon is a collective name for two particles: the neutron and the proton. These are the two constituents of the atomic nucleus. Until the 1960s, the nucleons were thought to be elementary particles. Now they are known to be composite particles, each made of three quarks bound together by the so-called strong interaction.
High Quality Content by WIKIPEDIA articles! A nuclide (from nucleus) is an atomic species characterized by the specific constitution of its nucleus, i.e., by its number of protons Z, its number of neutrons N, and its nuclear energy state.
High Quality Content by WIKIPEDIA articles! Obidoxime is a member of the oxime family used to treat nerve gas poisoning. Oximes are drugs known for their ability to reverse the binding of organophosphorus compounds to the enzyme acetylcholinesterase (AChE).
High Quality Content by WIKIPEDIA articles! Ocean acidification is the name given to the ongoing decrease in the pH of the Earth`s oceans, caused by the uptake of anthropogenic carbon dioxide (CO2) from the atmosphere. About 30–40% of the carbon dioxide released by humans into the atmosphere dissolves into the oceans, rivers and lakes. To maintain chemical equilibrium, some of it reacts with the water to form carbonic acid. Some of these extra carbonic acid molecules react with a water molecule to give a bicarbonate ion and a hydronium ion, thus increasing the ocean`s "acidity" (H+ ion concentration). Between 1751 and 1994 surface ocean pH is estimated to have decreased from approximately 8.25 to 8.14, representing an increase of...
High Quality Content by WIKIPEDIA articles! Octabenzone (Spectra-Sorb UV 531) is a UV absorber/screener. It is used to protect polymers (e.g., polyethylene, polypropylene, polyvinylchloride) against damage by UV light.
High Quality Content by WIKIPEDIA articles! Octachlorodibenzodioxin (can be abbreviated as OCDD) is a lesser known polychlorinated dibenzodioxin (PCDD). It is a teratogen, mutagen, and a possible carcinogen.
High Quality Content by WIKIPEDIA articles! Octodecanal is a long-chain aldehyde, with the chemical formula C17H35CHO (also known as stearyl aldehyde). Octadecanal is used by several species of insect as a pheromone.
High Quality Content by WIKIPEDIA articles! Octadecyltrimethoxysilane is an organosilicon compound, commonly called OTMS. This colourless liquid is used for preparing hydrophobic coatings and self-assembled monolayers. It is sensitive toward water, irreversibly degrading to a siloxane polymer. It places a C18H39SiO3 "cap" on oxide surfaces. The formation of OTMS monolayers is used for converting hydrophilic surfaces to hydrophobic surfaces, e.g. for use in certain areas of nanotechnology and analytical chemistry.
High Quality Content by WIKIPEDIA articles! Octafluoropropane (C3F8) is a fluorocarbon non-flammable greenhouse gas that can be produced either by electrochemical fluorination or by the Fowler process using cobalt fluoride.
High Quality Content by WIKIPEDIA articles! Octamoxin (trade names Ximaol, Nimaol), also known as 2-octylhydrazine, is an irreversible and nonselective monoamine oxidase inhibitor (MAOI) of the hydrazine class that was used as an antidepressant in the 1960s but is now no longer marketed.
High Quality Content by WIKIPEDIA articles! Octane is a hydrocarbon and an alkane with the chemical formula C8H18, and the condensed structural formula CH3(CH2)6CH3. Octane has many structural isomers that differ by the amount and location of branching in the carbon chain. One of these isomers, 2,2,4-trimethylpentane (isooctane) is used as one of the standard values in the octane rating scale.
High Quality Content by WIKIPEDIA articles! Octanal is an aldehyde with the chemical formula C8H16O. It occurs naturally as a colorless or lightly yellow tinged liquid with a fruit-like odor. It is a fairly combustible liquid. It is used commercially as a component in perfumes and in flavor production for the food industry.
High Quality Content by WIKIPEDIA articles! Octanol is a straight chain fatty alcohol with eight carbon atoms and the molecular formula CH3(CH2)7OH. Although the term octanol usually refers exclusively to the primary alcohol 1-octanol, there are other less common isomers of octanol such as the secondary alcohols 2-octanol, 3-octanol and 4-octanol.