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.
Another 30% of schizophrenics were found to have a high urinary pyrrole level (what Pfeiffer had labeled as Mauve factor because the urine turned purple on standing).
Heterocyclic compounds, mainly pyrazines, pyridines, pyrroles and thiazoles, found in fried and roasted chicken are listed in Table 6.
At ICOS 16, Thompson will present work on novel diastereoselective complexation reactions that generate dipyrromethene helicates with > 99 percent selectivity, as well as novel methodology by which to prepare functionalized pyrroles.
Erlich's reagent produces red to purple chromophores with many different compounds, but it is best known as a test for pyrroles (Butler and Walsh 1982).
However, the aroma components of green tea consist mostly of nitrogenous compounds such as pyrazines and pyrroles.
Recent research resulted in sophisticated new products where dosage can be as low as a few grams per hectare (fiproles, pyrroles, etc.
The mauve factor, a "pyrrole," is not exactly a porphyrin and most testing laboratories offer no means to test for pyrroles (www.
According to their chemical nature, these volatile flavor components were also grouped into 10 chemical classes that include aldehydes, alcohols, acids and esters, pyrazines, ketones, hydrocarbons, furans, thiazoles, pyrroles and pyridines, and sulfur-containing compounds.
During the formation of tetraphenyl porphyrin, it is four carbonyl carbons that transform into methine bridges (=C-) to interconnect pyrroles and phenyls.
15]N CP/MAS NMR spectra of the algaenan were very similar to those obtained for soil and soil fractions, with amides being the most abundant form of N (70%) with minor amounts of amines and pyrroles.