Combined preparations comprising an injectable gas dispersion and a coadministrable diffusible component which is capable of inward diffusion into the dispersed gas so as to promote temporary growth of the gas in vivo, the preparations being for use as contrast agents in ultrasound cardiac studies of patients who have undergone physical exercise-induced stress in order to promote vasodilatation.
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(2008/06/13)
Chloropolyfluoro-derivatives of ethyl methyl ether
Fluorination of 2-chloroethyl methyl ether by potassium tetrafluorocobaltate at 180-250 °C gave various tri-, tetra-, penta-and hexafluoro(2-chloroethyl methyl) ethers. Cobalt trifluoride afforded the same products in poorer recoveries. Structures were established spectroscopically. Cl2-UV and CHClFCHFOCHF2 gave halogeno-ethers by exchange of Cl for both H and also F.
Coe, Paul L.,Rowbotham, Roger A.,Tatlow, John Colin
p. 9 - 12
(2007/10/03)
Praeparative Enantiomerentrennung des Narkosegases Enfluran durch Einschluss-Gaschromatographie
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Schurig, Volker,Grosenick, Heiko,Green, Bernard S.
p. 1690 - 1691
(2007/10/02)
Process for adjusting the halogen content of halogenated aliphatic ethers
Process for adjusting the halogen content of halogenated aliphatic ethers, by selective replacement of a halide substituent on the ether with a hydrogen. The process is particularly useful for the production of certain inhalant anesthetics.