https://wikimd.org/index.php?action=history&feed=atom&title=PyrenePyrene - Revision history2026-05-09T23:59:20ZRevision history for this page on the wikiMediaWiki 1.44.2https://wikimd.org/index.php?title=Pyrene&diff=6319063&oldid=prevPrab: CSV import2025-02-18T04:53:20Z<p>CSV import</p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 04:53, 18 February 2025</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l24">Line 24:</td>
<td colspan="2" class="diff-lineno">Line 24:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{stub}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{stub}}</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== Pyrene ==</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><gallery></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">File:Pyrene.svg|Pyrene structure</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">File:Br4Py_self-assembly_on_Au.jpg|Br4Py self-assembly on gold</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">File:Br4Py_self-assembly_on_Au_2.jpg|Br4Py self-assembly on gold (second image)</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">File:Pyrene-numbering.svg|Pyrene numbering</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></gallery></ins></div></td></tr>
</table>Prabhttps://wikimd.org/index.php?title=Pyrene&diff=5296055&oldid=prevPrab: CSV import2024-02-25T18:34:48Z<p>CSV import</p>
<p><b>New page</b></p><div>'''Pyrene''' is a [[polycyclic aromatic hydrocarbon]] (PAH) consisting of four fused [[benzene]] rings, resulting in a flat aromatic system. The chemical formula is C<sub>16</sub>H<sub>10</sub>. This yellow crystalline solid is the smallest peri-fused PAH (one where the rings are fused through more than one face). Pyrene forms during incomplete combustion of organic compounds.<br />
<br />
==Properties==<br />
Pyrene is a flat molecule that can intercalate into DNA, while it is not a particularly potent mutagen, it is quite toxic and teratogenic. Pyrene is also used as a probe to determine the polarity of a solvent. It also has a high quantum yield of fluorescence, and because of this it is used in biochemistry experiments as a fluorescent probe, particularly when studying lipids.<br />
<br />
==Occurrence==<br />
Pyrene and its derivatives are products of combustion and are produced by fossil fuel burning for heat and power, making them common air pollutants. Pyrene is not a major constituent of [[tar]], but it is a component of soot, which is a byproduct of the combustion of diesel and other fuels.<br />
<br />
==Uses==<br />
Pyrene is used commercially to make dyes and dye precursors, and it is also used in research as a reference standard for the spectroscopic quantification of polycyclic aromatic hydrocarbons.<br />
<br />
==Health effects==<br />
Exposure to pyrene can cause skin irritation and inflammation. Long-term or repeated exposures can lead to more serious health effects, including cancer.<br />
<br />
==See also==<br />
* [[Polycyclic aromatic hydrocarbon]]<br />
* [[Benzene]]<br />
* [[Tar]]<br />
* [[Soot]]<br />
<br />
[[Category:Polycyclic aromatic hydrocarbons]]<br />
[[Category:Environmental health]]<br />
[[Category:Toxicology]]<br />
<br />
{{stub}}</div>Prab