pyrrole


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pyrrole

 [pir´ōl]
a basic, cyclic substance, obtained by destructive distillation of various animal substances.

pyr·role

(pir'ōl),
Divinylenimine; a heterocyclic compound found in many biologically important substances, for example, heme.
Synonym(s): azole, imidole

pyrrole

/pyr·role/ (pir´ōl)
1. a toxic, basic, heterocyclic compound; obtained by destructive distillation of various animal substances and used in the manufacture of pharmaceuticals. Pyrrole.
2. a substituted derivative of this structure.

pyrrole

(pîr′ōl′)
n.
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.

pyr·ro′lic (pĭ-rō′lĭk) adj.

pyrrole (C4H4NH)

[pirōl′, pir′ōl]
Etymology: Gk, pyrrhos, red
a five-membered heterocyclic aromatic substance occurring naturally in many compounds in the body. Heme and porphyrin are pyrrole derivatives.

pyr·role

(pir'ōl)
A heterocyclic compound found in many biologically important substances.
Synonym(s): azole, imidole.

pyrrole

a porphyrin building block that has a five-membered heterocyclic structure and contains nitrogen.

pyrrole

a basic, cyclic substance, obtained by destructive distillation of various animal substances. Critical components in the synthesis of porphyrins.
References in periodicals archive ?
Chlorfenapyr, which is a member of the pyrrole class of chemicals, is a proinsecticide compound; that is, its biological activity depends on its activation by another chemical.
Pfeiffer separated schizophrenic individuals into three categories based on levels of blood histamines and urinary pyrroles.
Evaluation of the pyrrole insecticide chlorfenapyr against insecticide susceptible and pyrethroid resistant Anopheles funestus (Diptera: Culicidae).
The electrochemical synthesis of poly (o-anisidine) homopolymer and its copolymerization with pyrrole have been investigated on mild steel.
Ozone reacted rapidly with unsaturated VOCs such as isoprene, pyrrole, and styrene but was relatively inert toward aromatic hydrocarbons.
It has been suggested that the nitrogen of the three conjugated pyrrole rings are protonated by NaOH [39].
It was reported that, during overoxidation, PPy loses its electroactivity due to the ejection of the dopant (dedoping), and oxygen-containing groups such as carbonyl and carboxyl are introduced to the pyrrole unit [36].
Carboxyethyl pyrrole (CEP) and iso[4]levuglandin (iso[4]LG)E2-protein adducts, which are uniquely generated through peroxidation of docosahexaenoate and arachidonate-containing lipids respectively, and heme oxygenase 1 were detected immunocytochemically in cortical brain tissues and by ELISA in blood plasma.
Because the center of chlorophyll's pyrrole ring consists of [Mg.
Possible precursors are the stable, delocalized structures called dipyrromethenes, or dipyrrylmsthanes, which retain the reactivity of pyrrole rings, but have a very fragile C1 link.
CBS (cyclobenzothiazole sulfenamide) and TMTD (tetramethylthiuramdisulfide) were provided by Flexsys: stearic acid, pyrrole and perfluorohexane by Aldrich; and micronized sulfur delivered by Jevsa S.
PRECURSOR POLYMER APPROACH TOWARDS THE SYNTHESIS OF CONJUGATED POLYMERS: ELECTROPOLYMERIZATION OF POLYMETHYLSILOXANES WITH PYRROLE.