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pyrrole

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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.

pyr·role (pîrl)
n.
A five-membered heterocyclic ring compound that has an odor similar to chloroform and is the parent compound of hemoglobin, chlorophyll, and many other complex, biologically active substances. Also called imidole.

pyr·rolic (p-rlk) 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.

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

pyrrole
a basic, cyclic substance, obtained by destructive distillation of various animal substances. Critical components in the synthesis of porphyrins.


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I believe that caffeine and its metabolites disturb the excretion of porphyrins, the pyrrole color agent in hemoglobin.
Electrochemical impedance spectroscopic measurements and morphological analysis of electrocoated thin films of pyrrole derivatives (19), poly(N-vinylcarbazole) (20), polyaniline (21), and poly(N-methyl pyrrole) (22), (23) were studied previously.
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].
 
 
 
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