nitrogen heterocyclic ring
111Porphin — chembox new ImageFile = Porphyrin.svg ImageSize= IUPACName= OtherNames= Section1=Chembox Identifiers CASNo= PubChem=66868 SMILES=C1=CC2=CC3=CC=C(N3)C=C4C=CC(=N4)C=C5C=CC(=N5)C=C1N2 Section2=Chembox Properties Formula=C20H14N4 MolarMass=310.35196… …
112Azirine — chembox new ImageFile=Azarines.svg ImageSize=100px IUPACName=1 H Azirine OtherNames= Section1=Chembox Identifiers CASNo=157 17 5 PubChem=5461042 SMILES=C1=CN1 Section2=Chembox Properties Formula=C2H3N MolarMass=41.05 g/mol Appearance= Density=… …
113Polycyclic compound — In organic chemistry, a polycyclic compound is a cyclic compound with more than one hydrocarbon loop or ring structures (benzene rings) [JerryMarch] . The term generally includes all polycyclic aromatic compounds, including the polycyclic… …
114BT-Epoxy — belongs to the group of of thermoset resins used in printed circuit boards (PCB s). It is a mixture of epoxy resin, a common raw material for PCB s and BT resins. BT stands for Bismaleimide Triazine resin. This is upon its turn a mixture of… …
115thiazole — /thuy euh zohl /, n. Chem. 1. a colorless, slightly water miscible liquid, C3H3NS, having a disagreeable odor. 2. any of various derivatives of this substance, used as dyes or reagents. [1885 90; THI + AZOLE] * * * ▪ chemical compound any… …
116pyrazine — ▪ chemical compound any of a class of organic compounds of the heterocyclic series characterized by a ring structure containing four atoms of carbon and two of nitrogen. The pyrazine ring is part of many polycyclic compounds of biological… …
117quinoline — noun Any of a class of aromatic heterocyclic compounds containing a benzene ring fused with a ring of five carbon atoms and a nitrogen atom; especially the simplest such compound, CHN …
118triazole — noun either of two isomeric heterocyclic compounds having a five membered ring with three nitrogen atoms and two double bonds in the ring; any organic derivative of these compounds …
119pyrazine — pyr·azine pir ə .zēn n 1) a crystalline heterocyclic weakly basic compound C4H4N2 2) any of various derivatives of pyrazine * * * py·ra·zine (pĭґrə zēn) an aromatic compound comprising a six membered ring with nitrogen atoms at… …
120pyrrole — noun Etymology: Greek pyrrhos Date: 1835 a toxic liquid heterocyclic compound C4H5N that has a ring consisting of four carbon atoms and one nitrogen atom, polymerizes readily in air, and is the parent compound of many biologically important… …
