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Pyrimidine is a heterocyclic aromatic organic compound similar to benzene and pyridine, containing two nitrogen atoms at positions 1 and 3 of the six-member ring.
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Pyrimidine and is
Pyrimidine is also found in meteorites, but scientists still do not know its origin.
Pyrimidine and nitrogen
* Pyrimidine, an analog with the second nitrogen atom in position 3
Pyrimidine and .
Pyrimidine also photolytically decomposes into uracil under UV light.
Pyrimidine dimers are formed by a photochemical reaction from pyrimidine DNA bases.
is and heterocyclic
Pyridine is a heterocyclic compound and the heteroatom is nitrogen.
A heterocyclic compound is a cyclic compound that has atoms of at least two different elements as members of its ring ( s ).
The heteroatom of heterocyclic molecules is generally oxygen, sulfur, or nitrogen, with the latter being particularly common in biochemical systems.
Uric acid is a heterocyclic compound of carbon, nitrogen, oxygen, and hydrogen with the formula C < sub > 5 </ sub > H < sub > 4 </ sub > N < sub > 4 </ sub > O < sub > 3 </ sub >.
A heme ( American English ) or haem ( British English ) is a prosthetic group that consists of an iron ion contained in the center of a large heterocyclic organic ring called a porphyrin.
In heterocyclic aromatics ( heteroaromats ), one or more of the atoms in the aromatic ring is of an element other than carbon.
* The first is the N1 heterocyclic ring, which causes a type I hypersensitivity reaction.
A nucleotide is an organic molecule consisting of a nitrogenous heterocyclic nucleobase ( a purine or a pyrimidine ), a pentose sugar ( deoxyribose in DNA or ribose in RNA ), and a phosphate or polyphosphate group.
A pteridine is also a group of heterocyclic compounds containing a wide variety of substitutions on this structure.
The chlorin ring is a heterocyclic compound derived from a pyrrole that encases a metal.
It is in both the imidazole and carbazole families of heterocyclic compounds.
Hydantoin, which is also known as glycolylurea, is a heterocyclic organic compound that can be thought of as a cyclic " double-condensation reaction " product of glycolic acid and urea.
The nitroxyl radical ( N-O ) is usually incorporated into a heterocyclic ring ( e. g. pyrrolidine ), and the unpaired electron is predominantly localized to the N-O bond.
Terpyridine ( 2, 2 '; 6 ', 2 "- terpyridine ) is a heterocyclic compound derived from pyridine.
Isoquinoline is a heterocyclic aromatic organic compound.
Pyrazine is a heterocyclic aromatic organic compound with the chemical formula C < sub > 4 </ sub > H < sub > 4 </ sub > N < sub > 2 </ sub >.
Benzofuran is the heterocyclic compound consisting of fused benzene and furan rings.
Indazole, also called benzpyrazole or isoindazone, is a heterocyclic aromatic organic compound.
Oxazole is the parent compound for a vast class of heterocyclic aromatic organic compounds.
Thiazole, or 1, 3-thiazole, is a heterocyclic compound that contains both sulfur and nitrogen ; the term ' thiazole ' also refers to a large family of derivatives.
Others have suggested that it is due to the presence of carcinogenic compounds called heterocyclic amines, which are created in the cooking process.
is and aromatic
The Apiaceae ( or Umbelliferae ), commonly known as carrot or parsley family, is a group of mostly aromatic plants with hollow stems.
An aromatic hydrocarbon or arene ( or sometimes aryl hydrocarbon ) is a hydrocarbon with alternating double and single bonds between carbon atoms forming rings.
The configuration of six carbon atoms in aromatic compounds is known as a benzene ring, after the simplest possible such hydrocarbon, benzene.
Benzene, C < sub > 6 </ sub > H < sub > 6 </ sub >, is the simplest aromatic hydrocarbon and was recognized as the first aromatic hydrocarbon, with the nature of its bonding first being recognized by Friedrich August Kekulé von Stradonitz in the 19th century.
In aromatic substitution one substituent on the arene ring, usually hydrogen, is replaced by another substituent.
The two main types are electrophilic aromatic substitution when the active reagent is an electrophile and nucleophilic aromatic substitution when the reagent is a nucleophile.
In radical-nucleophilic aromatic substitution the active reagent is a radical.
Ambergris is the waxy aromatic substance created in the intestines of sperm whales and was used in making perfumes both in ancient times as well as modern.
This type of reaction is found mainly in aliphatic hydrocarbons, and rarely in aromatic hydrocarbon.
This reaction takes place almost exclusively in aromatic hydrocarbons, where it is called electrophilic aromatic substitution.
The electrophile attack results in the so-called σ-complex, a transition state in which the aromatic system is abolished.
An alternative to aromatic substitution is electrophilic aliphatic substitution.
Wheat, corn and rice are used to produce Chinese liquor which is clear and aromatic, containing approximately 60 % alcohol.
The DNA double helix is stabilized primarily by two forces: hydrogen bonds between nucleotides and base-stacking interactions among the aromatic nucleobases.
Like caraway, its fernlike leaves are aromatic and are used to flavor many foods, such as gravlax ( cured salmon ), borscht and other soups, and pickles ( where the dill flower is sometimes used ).
Vermouth is a fortified wine flavored with aromatic herbs and spices (" aromatized " in the trade ) using closely guarded recipes ( trade secrets ).
Mastic ( aromatic, ivory coloured resin ) is grown on the Aegean island of Chios.
Juniper-Flavoured Spirit Drinks-This represents the earliest class of gin, which is produced by pot distilling alcoholic grain wash and redistilling it with botanicals to extract the aromatic compounds.
Lemon balm is used in some variations of the Colgate Herbal toothpaste for its soothing and aromatic properties.
* Synthetic-tanned leather is tanned using aromatic polymers such as the Novolac or Neradol types ( syntans, contraction for synthetic tannins ).
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