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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 ?
Substituted aromatic C-atoms of pyrrole unit were assigned I' 138.
Since 2000, several new non-repellant soil termiticides have been introduced on the market, such as Fipronil, a phenyl pyrazole (Aventis Corp, 2001), Imidacloprid, a chloronicotinyl (Bayer Corp, 2000), and Chlorfenapyr, a pyrrole (BASF Corp, 2001).
9] performed ab initio calculations using the density functional theory (DFT) to investigate the pyrolysis mechanism of pyrrole, and proposed the mechanism responsible for the formation of allyl cyanide, a major product formed during the decomposition of pyrrole.
The spectra of this peak was matched against the NIST library and the probability of the match suggested it was likely methyl pyrrole.
The polymers are formed by oxidation polymerization of monomers such as pyrrole and thiophene from solutions with polyacid, water and an aprotic solvent such as N methylformamide.
Pyrrole monomer supplied by Spectrochem, India, was used as received.
17 Commercially obtained pyrrole, benzaldehyde and acetone were distilled before use.
Improved synthesis of 2-pyrroleadehyde and of N-methyl-2-pyrrolealdehys further studies of pyrrole alcohols.
Sodium lauryl sulphate (SLS), ammonium per sulfate (APS), pyrrole, acetone, sodium chloride (NaCl), polyvinyl pyrrolidone (PVP), ethanol, 2-mercaptobenzothiazole (MBT), polyacrylic acid were obtained from s.
This is a variant spelling of polypyrrole, which can be found in The Oxford English Dictionary, where it is defined as "a polymer of pyrrole, especially one that is a solid material which conducts electricity when doped with protons or other charge carriers".