Linked from
The 17 pages that link to Diethyl ether, each with the reason it gives.
EtherBroader topic: It is the classic example of an ether used both as a solvent and anesthetic.
Ether anesthesiaBroader topic: Its vapor is the anesthetic agent used in ether anesthesia.
Crawford LongBroader topic: This was the anesthetic substance Long administered by inhalation.
Ethyl groupBroader topic: It contains two ethyl groups bonded to one oxygen atom.