Anti-inflammatory polymorphic monoethanolamine salt of N-(2-pyridyl)-2-methyl-4-hydroxy-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide compound, composition, and method of use therefor
US4582831A · kind A · utility
13Cited by
2References
3Claims
0Family size
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Key dates
| Filing date | Nov 16, 1984 |
| Grant date | Apr 15, 1986 |
| Priority date | — |
| Expiry date | Nov 16, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D417/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel crystalline form of the monoethanolamine salt of N-(2-pyridyl)-2-methyl-4-hydroxy-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide has been prepared. This novel crystalline form is designated as polymorph I and is useful in therapy as a non-steroidal anti-arthritic agent. Methods for preparing this polymorph from readily available materials are provided.
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