"""N-T-butyl-androst-3-5-diene-17 .beta.-carboxamide-3-carboxylic"" acid polymorph A"
US5859266A · kind A · utility
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Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J41/0066
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polymorph "A" a novel polymorphic form of N-t-butyl-androst-3,5-diene-17.beta.-carboxamide-3-carboxylic acid. Novel processes for preparing polymorph "A" are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.