Abstract
Six heavily fluorinated aliphatic compounds and four heavily fluorinated derivatives of diethyl ether have been examined as anaesthetics, using mice. Two compounds are felt to be worth further examination. These are 1,1,1,-trifluoro-2,2-dichloroethane (halothane with the bromine atom replaced by a second chlorine) and 1,1,2,2,4,5,5-heptafluoro-3-oxapentane (ordinary diethyl ether with seven hydrogen atoms replaced by fluorine).
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