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|Title:||Amido derivatives of 2,4,6-triiodobenzoic acids containing at least one N-hydroxyalkyl and at least two hydroxyl groups|
|Abstract:||This invention relates to novel X-ray contrast agents particularly for use in the cerebrospinal cavities, comprising non-ionic alkanols carrying at least one N-bonded secondary or tertiary amide group and having at least two hydroxyl groups and at least one iodine atom in the molecule. Particularly useful compounds include the N-hydroxyalkyl iodoalkane sulphonamides having at least two hydroxyl groups, tri- and tetra-iodobenzene carrying carbamoyl, acylamino and/or acylaminomethyl substituents and having at least two hydroxyl groups in the molecule and at least one N-hydroxyalkyl group. Particularly preferred compounds comprise 2,4,6-triiodobenzamides which may be 3- and/or 5-substituted with a variety of groups. The compounds all show markedly low toxicities and a number show very high levels of water solubility.|
|Inventor(s):||Almen; Torsten (Oslo, NO), Haavaldsen; Johan (Oslo, NO), Nordal; Vegard (Oslo, NO)|
|Assignee:||Nyegaard & Co. A/S (Oslo, NO)|
Patent Claim Types:|
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|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
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