Pyrimidine - Wikipedia
网页Pyrimidine (C4H4N2; / pɪˈrɪ.mɪˌdiːn, paɪˈrɪ.mɪˌdiːn /) is an aromatic, heterocyclic, organic compound similar to pyridine (C5H5N). [3] .
Pyrimidine - The Definitive Guide - Biology Dictionary
网页2020年1月28日 · Pyrimidines are simple aromatic compounds composed of carbon and nitrogen atoms in a six-membered ring. The term pyrimidine is also used to refer to pyrimidine derivatives, most notably the three nitrogenous bases that, along with the two purines, are the building blocks of both deoxyribonucleic acid (DNA) and ribonucleic acid …
Purines and Pyrimidines - Science Notes and Projects
网页2023年9月16日 · Purines and pyrimidines are two types of nitrogenous bases that form the structural foundation of nucleic acids like DNA and RNA. Though they both serve similar functions within the cell , their chemical structures, properties, and roles vary considerably.
The Difference Between Purines and Pyrimidines - ThoughtCo
网页2019年3月27日 · Purines and pyrimidines are two types of aromatic heterocyclic organic compounds. In other words, they are ring structures (aromatic) that contain nitrogen as well as carbon in the rings (heterocyclic). Both purines and pyrimidines are similar to the chemical structure of the organic molecule pyridine (C 5 H 5 N).
Pyrimidine | Nucleobases, DNA, RNA | Britannica
网页Pyrimidine, any of a class of organic compounds of the heterocyclic series characterized by a ring structure composed of four carbon atoms and two nitrogen atoms. The simplest member of the family is pyrimidine itself, with molecular formula C4H4N2. Several pyrimidine compounds were isolated.
Pyrimidine- Definition, Properties, Structure, Uses - Microbe Notes
网页2023年8月3日 · Pyrimidines are defined as polyunsaturated six-membered aromatic heterocyclic compounds containing two nitrogen atoms at the 1, 3 – position of the ring.
1.2: Structure of DNA and RNA - Biology LibreTexts
网页DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are composed of two different classes of nitrogen-containing bases: the purines and pyrimidines. The most commonly occurring purines in DNA are adenine and guanine: Figure 1.2.1: Purines. The most commonly occurring pyrimidines in DNA are cytosine and thymine: Figure 1.2.2: …
Purines and pyrimidines - Knowledge @ AMBOSS
网页Purines and pyrimidines are fundamental components of nucleotides in DNA and RNA and are essential for the storage of information in the cell. They also serve as a basic framework for coenzymes and...
Pyrimidine - Definition and Examples - Biology Online Dictionary
网页2021年8月27日 · Pyrimidine is a heterocyclic aromatic organic compound with a chemical formula of C 4 H 4 N 2. It has a single ring (called a pyrimidine ring) with alternating carbon and nitrogen atoms. The molar mass of pyrimidine is 80.088 g/mol and its melting point is at 20-22 °C. Cytosine, Thymine, and Uracil.
Significance and Biological Importance of Pyrimidine in the …
网页2014年3月23日 · Pyrimidines are biologically very important heterocycles and represent by far the most ubiquitous members of the diazine family with uracil (6) and thymine (7) being constituents of ribonucleic acid (RNA) and deoxyribonucleic acid (DNA) and with cytosine (8) both being present in Figure 2 (b).