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1. A five-membered heterocyclic ring compound, C4H5N, having an odor similar to chloroform, that is the parent compound of protoporphyrin.
2. Any of various derivatives of this compound.

[Greek purros, red (from pūr, fire; see pyre) + -ole.]

pyr·ro′lic (pĭ-rō′lĭk) adj.


(ˈpɪrəʊl; pɪˈrəʊl)
(Elements & Compounds) a colourless insoluble toxic liquid having a five-membered ring containing one nitrogen atom, found in many naturally occurring compounds, such as chlorophyll. Formula: C4H5N. Also called: azole
[C19: from Greek purrhos red, from pur fire +-ole1]
pyrrolic adj


(pɪˈroʊl, ˈpɪr oʊl)

a colorless, toxic, liquid, five-membered ring compound, C4H5N, that is a component of chlorophyll and hemin.
[1825–35; < Greek pyrr(hós) red]
pyr•rol•ic (pɪˈrɒl ɪk, -ˈroʊ lɪk) adj.
References in periodicals archive ?
In this case, pyrroles, neonicotinoids, and spinosyns may be used in rotation to control both C.
Conducting polymers (CPs) are suitable matrixes for the entrapment of enzymes [30], and they are promising candidates for the enzyme electrode component because they are readily synthesized in the form of thin films by electrochemical polymerization of heterocyclic compounds such as pyrroles and thiophenes [31-33].
In each class of materials, the aromatic moieties may be either benzene derivatives or heteroaromatics such as thiophenes, pyridines, pyrroles and thiazoles.
In addition to this, chemicals such as chlorinated hydrocarbons, phenylpyrazole, chloronicotinyls, borates, trifluoromethyl aminohydrazones, and pyrroles are also used in this method.
(7) Loss of function of the enzyme aminolevulinate synthase is linked with excessive production of pyrroles and, also, x-linked sideroblastic anemia.
3b, Table S3) indicated that the <53 [micro]m fraction comprised mainly heterocyclic N, both pyrroles and pyridines.
According to the EPA (2016b), there are over 300 registered products in seven categories that will kill bed bugs: Pyrethrins, pyrethroids, dessicants, biochemical, pyrroles, neonicotinoids, and insect growth regulators.
It is particularly useful in cases such as pyrroles which have a substantially more reactive anion compared to phenothiazine.
Gorls, "Synthesis of radialene-shaped pyrroles by multiple-anion-capture reactions of 1,3-dianions," Chemistry, vol.
Pyrroles: The compound is a pro-insecticide which means the biological activity depends on its activation to form another chemical.
Five-membered ring heteroaromatics such as pyrroles, furans, thiophenes and isoxazoles form a cornerstone of medicinal and agrochemical research.
This book on the chemistry of pyrroles describes a method for the construction of the pyrrole ring from ketones and acetylene in superbase catalytic systems.