The invention provides low viscosity iodinated aryl compounds, useful as X-ray contrast agents, of formula C6R6 wherein three non-adjacent R groups are iodine and the remaining R groups are non-ionic, hydrophilic moieties, said compound being water soluble at 20° C. to a concentration of at least 350 mgl/ml and which in aqueous solution at 20° C. at a concentration of 350 mgl/ml has a viscosity no greater than 13.8 mPas.
Nitroxyl compound and diagnostic media based thereon useful for
申请人:Schering Aktiengesellschaft
公开号:US04845090A1
公开(公告)日:1989-07-04
Diagnostic media suitable for NMR diagnoses contain compounds of Formula I ##STR1## wherein is a single bond or a double bond, X is the grouping --(CH.sub.2).sub.n -- or, if is a single bond, also the grouping --NHCO(CH.sub.2).sub.n -- wherein n means 0 to 4, m means the numbers 0, 1, or 2, R.sub.1 is an alkyl residue substituted by hydroxy groups, acyloxy groups and/or alkylidenedioxy groups, R.sub.2 has the same meanings as R.sub.1 or is a hydrogen atom or an alkyl residue, R.sub.3 and R.sub.4 are alkyl residues, and R.sub.5 and R.sub.6 are alkyl residues optionally substituted by hydroxy groups.
[EN] NON-IONIC POLYOL CONTRAST MEDIA FROM IONIC CONTRAST MEDIA
申请人:COOK IMAGING, INC.
公开号:WO1987000757A1
公开(公告)日:1987-02-12
(EN) Novel non-ionic contrast media are efficiently prepared from generally available ionic contrast media or non-iodinated precursors. Particularly, polyhydroxyhalo-hydrocarbons are employed with a triiodo-substituted acylamido benzoic acids in aqueous weakly basic media to selectively substitute the amido nitrogen, followed by activation of the carboxyl group for amide formation.(FR) De nouveaux milieux de contraste non-ioniques sont préparés de manière efficiente à partir de milieux de contraste ioniques couramment disponibles ou à partir de précurseurs non-iodés. On utilise notamment des polyhydroxyhalo-hydrocarbures avec des acides acylamido benzoïques à substitution triiodo dans des milieux aqueux faiblement basiques pour substituer de manière sélective l'azote amido, cette opération étant suivie par l'activation du groupe carboxyle pour la formation d'amides.
[EN] 1,3-BIS-[3-(MONO- OR POLY-HYDROXY)ACYLAMINO-5-(MONO- OR POLY-HYDROXYALKYL)AMINOCARBONYL-2,4,6-TRIIODO-BENZOYL-AMINO]-HYDROXY- OR HYDROXYALKYL-PROPANES, THEIR METHODS OF PREPARATION AND X-RAY CONTRAST MEDIA CONTAINING THEM
申请人:BRACCO INDUSTRIA CHIMICA S.P.A.
公开号:WO1992008691A1
公开(公告)日:1992-05-29
(EN) Symmetrical or asymmetrical 1,3-bis-[3-(mono- or poly-hydroxy)acylamino-5-(mono- or polyhydroxyalkyl)-aminocarbonyl-2,4,6-triiodo-benzoyl-amino]-hydroxy- or hydroxyalkyl-propanes, useful to constitute the opacifying component of X-ray contrast media, are described.(FR) On décrit des 1,3-bis-[3-(mono- ou polyhydroxy)acylamino-5-(mono- ou polyhydroxyalkyle)-aminocarbonyle-2,4,6-triido-benzoyle-amino]-hydroxy- ou hydroxyalkyle-propanes symetriques ou asymétriques, pouvant être utilisés comme comme constituants opacifiants de milieux de contraste de rayons-X.