Compounds
US4293541A · kind A · utility
4Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1980 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Apr 25, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D493/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is described a salt of 2,8-dicarboxy-4,6-dioxo-10-propyl-4H,6H-benzo(1,2-b:5,4-b')dipyran with a pharmaceutically acceptable organic cation, the salt having a solubility of less than 31 w/w in water a 20.5.degree. C. There are also described processes for making the salts and pharmaceutical, e.g. anti-allergic, compositions containing them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.