66257 <common-name>Perfluorobut-2-ene</common-name> <description>Perfluorobut-2-ene (C4F8) is an organic compound with an average molecular weight of 200.03 g/mol. Perfluorobut-2-ene belongs to the vinyl fluorides, a subclass of vinyl halides within the organic compounds. This compound is associated with 22 recorded sources. Within the energy, oil and gas sector as well as industrial manufacturing and chemical processing, it is found in lubricants. It is present in healthcare, pharmaceuticals and veterinary products in the form of medical devices, and in food, food processing and cookware via food packaging. In the textiles, leather and furnishings sector, it is found in synthetic textiles as well as carpets and rugs. Furthermore, it is released from electrical and electronic equipment, including cell phones, capacitors, wires and cables, batteries, and printed circuit boards, among eight other sources. There are three additional sectors from which the compound is recorded. Human exposure routes for perfluorobut-2-ene include inhalation, oral ingestion, and touch.</description> <cas nil="true"/> <pubchem-id>9678</pubchem-id> <chemical-formula>C4F8</chemical-formula> <weight nil="true"/> <appearance nil="true"/> <melting-point nil="true"/> <boiling-point nil="true"/> <density nil="true"/> <solubility nil="true"/> <specific-gravity nil="true"/> <flash-point nil="true"/> <vapour-pressure nil="true"/> <route-of-exposure nil="true"/> <target nil="true"/> <mechanism-of-toxicity nil="true"/> <metabolism nil="true"/> <toxicity nil="true"/> <lethaldose nil="true"/> <carcinogenicity nil="true"/> <use-source nil="true"/> <min-risk-level nil="true"/> <health-effects nil="true"/> <symptoms nil="true"/> <treatment nil="true"/> <created-at type="dateTime">2026-04-03T05:49:44Z</created-at> <updated-at type="dateTime">2026-05-20T22:02:18Z</updated-at> <interacting-proteins nil="true"/> <wikipedia nil="true"/> <uniprot-id nil="true"/> <kegg-compound-id nil="true"/> <omim-id nil="true"/> <chebi-id nil="true"/> <biocyc-id nil="true"/> <ctd-id nil="true"/> <stitch-id nil="true"/> <drugbank-id nil="true"/> <pdb-id nil="true"/> <actor-id nil="true"/> <organism nil="true"/> <export type="boolean">true</export> <metabolizing-proteins nil="true"/> <transporting-proteins nil="true"/> <moldb-smiles>FC(=C(F)C(F)(F)F)C(F)(F)F</moldb-smiles> <moldb-formula>C4F8</moldb-formula> <moldb-inchi>InChI=1S/C4F8/c5-1(3(7,8)9)2(6)4(10,11)12/b2-1-</moldb-inchi> <moldb-inchikey>WSJULBMCKQTTIG-UHFFFAOYSA-N</moldb-inchikey> <moldb-average-mass type="decimal">200.031</moldb-average-mass> <moldb-mono-mass type="decimal">199.987226</moldb-mono-mass> <origin nil="true"/> <state nil="true"/> <logp nil="true"/> <hmdb-id nil="true"/> <chembl-id nil="true"/> <chemspider-id>9297</chemspider-id> <structure-image-file-name nil="true"/> <structure-image-content-type nil="true"/> <structure-image-file-size type="integer" nil="true"/> <structure-image-updated-at type="dateTime" nil="true"/> <biodb-id nil="true"/> <synthesis-reference nil="true"/> <structure-image-caption nil="true"/> <chemdb-id>CHEM062150</chemdb-id> <dsstox-id>DTXSID3059890</dsstox-id> <toxcast-id nil="true"/> <stoff-ident-origin nil="true"/> <stoff-ident-id nil="true"/> <susdat-id>NS00019005</susdat-id> <iupac>1,1,1,2,3,4,4,4-octafluorobut-2-ene</iupac> <moldb-polar-surface-area nil="true"/> <moldb-refractivity nil="true"/> <moldb-polarizability nil="true"/> <moldb-rotatable-bond-count nil="true"/> <moldb-acceptor-count nil="true"/> <moldb-donor-count nil="true"/> <moldb-pka-strongest-acidic nil="true"/> <moldb-pka-strongest-basic nil="true"/> <moldb-physiological-charge nil="true"/> <moldb-number-of-rings nil="true"/> <moldb-alogps-logp nil="true"/> <moldb-alogps-logs nil="true"/> <moldb-alogps-solubility nil="true"/> <kingdom>Organic compounds</kingdom> <superklass>Organohalogen compounds</superklass> <klass>Vinyl halides</klass> <subklass>Vinyl fluorides</subklass> <paper-count type="integer">2</paper-count> <sync-id>CED0055284</sync-id> <structure-inchikey>WSJULBMCKQTTIG-UHFFFAOYSA-N</structure-inchikey> <structure-fingerprint>2000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000400000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000800000000000000000000000000008</structure-fingerprint> <structure-pattern-fingerprint>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</structure-pattern-fingerprint> <structure-pickle>ï¾­Þ������������������������€� � ������(�������(����� � ������ ���� � ���� � ���� � ������ ���� � ���� � ���� � ������������������������������� �� ����B��������������</structure-pickle> <structure-indexed-at type="dateTime">2026-09-19T04:16:49Z</structure-indexed-at> </compound>