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sheji 化工开发)Many ethers, including diethyl ether, are effective as general anesthetics (麻醉剂). Because simple ethers are quite flammable, their place in medical practice has been taken by highly halogenated nonflammable ethers. Two such general anesthetic agents are isoflurane and enflurane. These compounds are isomeric. Isoflurane is 1-chloro-2, 2, 2-trifluoroethyl difluoromethyl ether, enflurane is 2-chloro-1, 1, 2-trifluoroethyl difluoromethyl ether.