Enantiomeric separation and purification of 2,3,4,9-tetrahydro-1H-carbazole-4-carboxylic acid amide derivatives
US9815785B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Jul 17, 2014 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Jul 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/60
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method for the purification of cyclic indole compounds that provides advantages over previously-known methods. Using the method of the present invention allows for the facile preparation of a good quality solid form of these compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.