Laboratoires Andre Guerbet

Guerbet S.a.

Guy Tilly

Jean Lautrou

Michel Jean Hardouin

Michel Jean-Charles Hardouin

M Jean-Charles Hardouin

This invention relates to compounds of the formula (I): ##STR1## in which: n is an integer from 1 to 5 inclusive,

Ionic polyiodo benzene derivatives useful as X-ray contrast media

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,

Polyiods benzene derivatives and X-ray contrast media containing the same

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.

Iodobenzene derivatives and X-ray contrast media containing the same

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.

X-Ray contrast media

X-ray contrast media

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.

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,

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Aulnay-sous-Bois, France

Guy Tilly