Sevoflurane (2,2,2-trifluoro-1-[trifluoromethyl]ethyl fluoromethyl ether), also called fluoromethyl, is a sweet-smelling, non-flammable, highly fluorinated methyl isopropyl ether used for induction and maintenance of
general anesthesia. Together with
desflurane, it is replacing
isoflurane and
halothane in modern
anesthesiology. It is often administered in a mixture of nitrous oxide and oxygen. After
desflurane it is the
volatile anesthetic with the fastest onset and offset. Though desflurane has the lowest blood/gas coefficient of the currently used volatile anesthetics, sevoflurane is the preferred agent for mask induction due to its lesser irritation to mucous membranes.
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