fluorocarbon tetrafluoroethene Beilstein:1740275 chebi_ontology perfluoroethene InChI=1S/C2F4/c3-1(4)2(5)6 Gmelin:25997 FC(F)=C(F)F CHEBI:38866 BFKJFAAPBSQJPD-UHFFFAOYSA-N Beilstein:1098492 Perfluoraethylen F2C=CF2 TFE tetrafluoroethene 99.99361 perfluoroethylene C2F4 100.01501 1,1,2,2-tetrafluoroethylene KEGG:C19299 tetrafluoroethylene CAS:116-14-3 0 Tetrafluoraethylen Tetrafluoraethen C2F4