Process for the preparation of freeze-dried 2-[(3-aminopropyl)amino] ethanethiol formulation
US11021442B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Nov 29, 2017 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Feb 23, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P17/16
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for the preparation of freeze-dried 2-[(3-aminopropyl)amino]ethanethiol including the following steps: a) the reaction of a solution of amifostine with a strong acid, to obtain a solution of 2-[(3-aminopropyl)amino]ethanethiol, and b) the freeze-drying of the solution of 2-[(3-aminopropyl)amino]ethanethiol, with or without addition of excipients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.