Isethionic acid salt of 9-cyclohexyl-2-propoxy-9H-purine-6-amine and compositions containing an effective bronchodilating concentration of it
US4419358A · kind A · utility
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4Claims
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Assignee
Inventors
Key dates
| Filing date | Nov 12, 1981 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Nov 12, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P11/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention concerns an isethionic acid addition salt of the non-adrenergic bronchodilating agent 9-cyclohexyl-2-propoxy-9H-purine-6-amine. The salt is comprised of a 2:1 molecular ratio of the isethionic acid to the adenine base. The salt of the invention is characterized in having improved water solubility and stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.