Derivatives of 2,4,6-triiodo-isophthalic acid, processes for their synthesis and X-ray contrasting materials containing these
US4352788A · kind A · utility
29Cited by
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6Claims
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Key dates
| Filing date | Jul 30, 1980 |
| Grant date | Oct 5, 1982 |
| Priority date | — |
| Expiry date | Jul 30, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D317/28
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds for use in non-ionic X-ray contrasting materials having the formula ##STR1## in which (H0).sub.2-3 alkyl is 1,3-dihydroxyisopropyl, 2,3-dihydroxypropyl or 1,3-dihydroxy-2-hydroxymethylisopropyl, PA1 R is hydrogen or methyl, and PA1 R.sub.1 is an alkyl residue with 1 to 5 carbon atoms. These compounds possess high water-solubility as well as excellent stability against hydrolysis. Methods for preparation and use of the compounds are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.