Enflurane

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Enflurane
Systematic (IUPAC) name
2-chloro-1-(difluoromethoxy)-1,1,2-trifluoro-ethane
Identifiers
CAS number 13838-16-9
ATC code N01AB04
PubChem 3226
DrugBank APRD00234
Chemical data
Formula C3H2ClF5O 
Mol. mass 184.492 g/mol
Pharmacokinetic data
Bioavailability  ?
Protein binding 97%
Metabolism  ?
Half life  ?
Excretion  ?
Therapeutic considerations
Pregnancy cat.

?

Legal status
Routes  ?

Enflurane (2-chloro-1,1,2,-trifluoroethyl-difluoromethyl ether) is a halogenated ether that was commonly used for inhalational anesthesia during the 1970s and 1980s. Developed by Ross Terrell in 1963, it was first used clinically in 1966.

Enflurane is a structural isomer of isoflurane. It vaporizes readily, but is a liquid at room temperature.

Clinically, enflurane produces a dose-related depression of myocardial contractility with an associated decrease in myocardial oxygen consumption. Between 2% and 5% of the inhaled dose is oxidised in the liver, producing fluoride ions and difluoromethoxy-difluoroacetic acid. This is significantly higher than the metabolism of its structural isomer isoflurane.

[edit] Physical properties

Molecular weight 184.5 g/mol
Boiling point (at 1 atm): 56.5 °C
MAC : 1.68
Vapor pressure: 172 mmHg (at 20°C)
Blood:Gas Partition Coefficient: 1.9
Oil:Gas Partition Coefficient: 98

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