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Reference.org
Trifluoromethyl group
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<p>The trifluoromethyl group is a <a href="/facts/Functional_group/GXkSPsjM">functional group</a> that has the <a href="/facts/Chemical_formula/hghUtthl">formula</a> −CF3. The naming of is group is derived from the <a href="/facts/Methyl/fkM97EMD">methyl</a> group (which has the formula −CH3), by replacing each <a href="/facts/Hydrogen/BoYHjl0J">hydrogen</a> atom by a <a href="/facts/Fluorine/YUV0Fb8m">fluorine</a> atom. Some common examples are <a href="/facts/Trifluoromethane/vtMbDNbb">trifluoromethane</a> H−CF3, <a href="/facts/1%2c1%2c1-trifluoroethane/MHgy0qk1">1,1,1-trifluoroethane</a> H3C−CF3, and <a href="/facts/Hexafluoroacetone/4xh8RV98">hexafluoroacetone</a> F3C−CO−CF3. Compounds with this group are a subclass of the <a href="/facts/Organofluorine/EwWmHflJ">organofluorines</a>. </p>