Abstract: Lysine salt of the complex of gadolinium (III) of 1,4,7,10-tetraazacyclododecane-N,N',N",N'"-tetraacetic acid. Said salt has a low toxicity and may be used as diagnostic agent in magnetic resonance imaging.

Abstract: X-ray contrast media, for which the human body has a greater tolerance than that of contrast media comprising solely iodobenzene compounds, and an opacity of the same order of magnitude as the latter contrast media, comprise mixtures of benzene compounds nuclearly substituted with a plurality of iodine atoms and of benzene compounds nuclearly substituted with a plurality of bromine atoms, the bromobenzene compounds having the mole ratio from 1/2 to 2/1 to the iodobenzene compounds in the mixture.

Abstract: This invention relates to compounds of the formula (I): ##STR1## in which: n is an integer from 1 to 5 inclusive,R.sub.1 represents a hydrogen atom or a C.sub.1-4 alkanoyl group,R.sub.2 represents a hydrogen atom, a C.sub.1-4 alkanoyl group, or a C.sub.1-4 alkyl group,R.sub.3 represents a hydrogen atom, a group of the formula ##STR2## or of the formula --CONHR.sub.6, in which: R.sub.4 represents a hydrogen atom or a C.sub.1-4 alkanoyl group,R.sub.5 represents a hydrogen atom or a C.sub.1-4 alkanoyl group, or a C.sub.1-4 alkyl group,R.sub.6 represents a hydrogen atom or a C.sub.1-4 alkyl group,R.sub.7 represents a hydrogen atom or a methyl group, and their C.sub.1-4 alkyl esters and their salts with pharmaceutically acceptable bases.Said compounds are useful as X-ray contrast media.

Abstract: This invention relates to compounds of the formula: ##STR1## in which: R.sub.1 represents a hydrogen atom or a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical,R.sub.2 represents a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical,A represents a group of the formula: ##STR2## in which: R.sub.3 represents a hydrogen atom, a group of the formula ##STR3## in which R.sub.5 and R.sub.6 represent each a hydrogen atom or a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical, or a group of the formula ##STR4## in which R.sub.7 represents a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical and R.sub.8 represents a hydrogen atom, a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical,a is 0 or 1 and n is an integer from 1 to 5 inclusive,R.sub.4 represents a hydrogen atom or a C.sub.1-4 alkyl radical or a C.sub.1-4 hydroxyalkyl radical, their methyl and ethyl esters and their salts with pharmaceutically acceptable bases.Said compounds are useful as X-ray contrast media.

Abstract: The present invention provides new iodobenzene derivatives which have at least two benzene nuclei and one carboxylic group.These derivatives possess a low toxicity and may be used as X-ray contrast media.

Abstract: The present invention provides new iodo benzene derivatives which have at least two benzene nuclei and one carboxylic group.These derivatives possess a low toxicity and may be used as X-ray contrast media.

Abstract: The present invention provides new iodo benzene derivatives which have at least two benzene nuclei and one carboxylic group.These derivatives possess a low toxicity and may be used as X-ray contrast media.

Abstract: This invention relates to compounds having the following general formula: ##STR1## in which n is an integer from 0 to 4; R.sub.1 and R.sub.2 represent independently from each other a radical of the formula --CONHR.sub.5 in which R.sub.5 is an alkyl radical having 1-4 carbon atoms or a hydroxyalkyl radical having 1-4 carbon atoms or a radical of the formula ##STR2## in which R.sub.6 and R.sub.7 are alkyl radicals having 1-4 carbon atoms; and R.sub.3 and R.sub.4, independently from each other, represent a hydrogen atom or an alkyl radical having 1-4 carbon atoms.Said compounds are useful as X-ray contrast media, particularly for myelography.

Abstract: The present invention provides new iodo benzene derivatives which have at least two benzene nuclei and one carboxylic group.These derivatives possess a low toxicity and may be used as X-ray contrast media.

Abstract: This invention relates to compounds of the formula: ##STR1## in which: R.sub.1 represents a hydrogen atom or a radical of the formula ##STR2## in which R.sub.4 and R.sub.5 represent, independently of each other, a hydrogen atom or a lower alkyl radical,R.sub.2 represents a hydrogen atom or a lower alkanoyl radical,R.sub.3 represents a hydrogen atom, a lower alkyl radical or a lower alkanoyl radical,n is 3 or 4,And their lower alkyl esters and their salts with pharmaceutically acceptable bases.Said compounds are useful as X-ray contrast media.