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Related to pyridine: imidazole


A flammable, colorless or yellowish liquid base, C5H5N, having a penetrating odor and serving as the parent compound of many biologically important derivatives. It is used as a solvent and in the manufacture of various agricultural chemicals, rubber products, water repellents, dyes, and drugs.

py·rid′ic (pī-rĭd′ĭk) adj.


(Elements & Compounds) a colourless hygroscopic liquid with a characteristic odour. It is a basic heterocyclic compound containing one nitrogen atom and five carbon atoms in its molecules and is used as a solvent and in preparing other organic chemicals. Formula: C5H5N
[C19: from pyro- + -id3 + -ine2]


(ˈpɪr ɪˌdin, -dɪn)

a colorless, flammable, liquid organic base, C5H5N, used chiefly as a solvent and in organic synthesis.
[1855; pyr- or pyr (role) + -idine]
py•rid•ic (paɪˈrɪd ɪk) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pyridine - a toxic colorless flammable liquid organic base with a disagreeable odor; usually derived from coal
alkali, base - any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water; "bases include oxides and hydroxides of metals and ammonia"
triphosphopyridine - a pyridine ring with three phosphorus groups
References in periodicals archive ?
253 mol of pyridine ([greater than or equal to] 99%, Aldrich) or N, N,N, N'-tetramethylethylenediamine (TMEDA) (99%, Aldrich) is mixed with metal catalyst (0.
Based on the results of early studies of raw Green River shale oils Poulson [9] concluded that basic nitrogen compounds in shale oil are principally of pyridine type with small amounts of amines present.
Pyridine, which has a fish-like odour, is so hazardous that the HPA advises that people should be kept 250m away from any leak because of its volatile nature.
We investigate a synthetic iron porphyrin, (TPP)FeCl (Figure 1) (where TPP = the dianion of tetraphenylporphyrin), for its catalytic properties toward DDT dechlorination in pyridine and DMSO.
6]] and perfluoroalkylated pyridine were used in different molar quantities: 1 mmole urea, 8 mmole [2-aemim][[PF.
30am after a small amount of the chemical pyridine leaked from a package.
The substance, called Pyridine, came from a package, believed to have been dropped while being sorted, causing fumes to escape.
In the plant, we detected several chemicals with hepatotoxic potential, including pyridine, dimethylformamide, dimethylacetamide, and methylenedianiline.
The work presented here in has focused on the study of stability of solid phase oxo rhenium (V) complexes with mixed Ligands comprising of 2--mercapto pyridine, ammonia and thiocyanide.
Some, such as pyridine and butadiene, are designed to measure exposure to "environmental tobacco smoke", while others check for the effects of vehicle exhaust fumes.
Pyridine has been shown under appropriate conditions to be able to substitute for other terminal ligands on basic carboxylate Cr(III) assemblies (Harton, et al.
Compounds 1/2 also act as reversible sensors for dioxane, DMF and acetonitrile (Figure 2), however strongly coordinating solvents such as ammonia and pyridine are not easily displaced.