nitrogen heterocyclic ring
21cyclo-ligase — cy·clo li·gase (si″klo liґgās) [EC 6.3.3] one of a sub subclass of enzymes of the ligase class that catalyze the formation of carbon nitrogen bonds to produce a heterocyclic ring, driven by the hydrolysis of adenosine triphosphate …
22Pyridine — Pyridine …
23Persistent carbene — A stable carbene: isolated 1,3 dimesitylimidazol 2 ylidene in a Schlenk flask (stir bar also present). A persistent carbene (also known as stable carbene or Arduengo carbene) is a type of carbene demonstrating particular stability. The best known …
24Imidazole — Chembox new Name = Imidazole ImageFile = Imidazole chemical structure.png ImageSize = 345px ImageName = Chemical structure of imidazole IUPACName = 1,3 diazole OtherNames = Imidazole 1,3 diazacyclopenta 2,4 diene SMILES = n1c [nH] cc1 Section1 =… …
25organosulfur compound — ▪ chemical compound Introduction also spelled organosulphur compound , also called organic sulfur compound a subclass of organic substances that contain sulfur and that are known for their varied occurrence and unusual properties. They are… …
26Organic chemistry — Structure of the methane molecule: the simplest hydrocarbon compound. Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, composition, reactions, and preparation (by synthesis or by… …
27Aromatic hydrocarbon — Arene redirects here. For other uses, see Arene (disambiguation). An aromatic hydrocarbon or arene[1] (or sometimes aryl hydrocarbon)[2] is a hydrocarbon with alternating double and single bonds between carbon atoms. The term aromatic was… …
28Isoquinoline — Chembox new Name = Isoquinoline ImageFile = Isoquinoline chemical structure.png ImageSize = 450px ImageName = Chemical structure of Isoquinoline IUPACName = Isoquinoline OtherNames = benzo [c] pyridine, 2 benzanine Section1 = Chembox Identifiers… …
29ANRORC mechanism — The ANRORC mechanism in organic chemistry describes a special type of substitution reaction. ANRORC stands for Addition of the Nucleophile, Ring Opening, and Ring Closure in nucleophilic attack on ring systems [ The SN(ANRORC) mechanism: a new… …
305-HT3 antagonist — 5 HT3 receptor antagonists Drug class Skeletal formula of ondansetron, the prototypical 5 HT3 antagonist ATC code A04AA …
