pyrrol


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pyr´rol


n.1.(Chem.) A nitrogenous heterocyclic base found in coal tar, bone oil, and other distillates of organic substances, and also produced synthetically as a colorless liquid, C4H5N, having on odor like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colors a splinter of wood moistened with hydrochloric acid a deep red.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Protein kinase inhibitor pyrrol derivate 1-(4-Cl-benzyl)-3-Cl-4-(CF3-fenylamino)-1H-pyrrol-2,5-dione (MI-1) (Figure 1) has been synthesized at Chemistry Department of Taras Shevchenko National University of Kyiv.
In the case of 488 nm laser (Figure 4(a)), the peak at 1110 [cm.sup.-1] became lower (corresponding to acyl chain Stretch[down arrow]), the peak at 1370 [cm.sup.-1] became sharper and higher (corresponding to pyrrol ring vibration: 1355 [cm.sup.-1] representing [Fe.sup.2+][down arrow] and 1375 [cm.sup.-1] representing [Fe.sup.3+][up arrow]), and the wide band of multiple peaks at 1550-1650 [cm.sup.-1] (1530 [cm.sup.-1] for C = C Trp[down arrow], 1545 [cm.sup.-1] for [Fe.sup.2+][down arrow], 1608 [cm.sup.-1] for [Fe.sup.2+][down arrow], and 1642 [cm.sup.-1] for [Fe.sup.3+][up arrow]) were modified by air APPJ treatment [24].
COHb is produced when carbon monoxide binds to the Fe(II) in the place of [O.sub.2.] SHb is a degradation product of hemoglobin and is thought to consist of sulfur bound to the pyrrol group of the porphyrin ring (1).
Ciba Specialty Chemicals officially opened its DPP (diketo pyrrolo pyrrol) pigments plant in Newport, DE.
Monocrotaline pyrrol is cytotoxic and alters the patterns of GFAP expression on astrocyte primary cultures.