Method for preparing 3,7-bis(dimethylamino)phenothiazin-5-ylium iodide
US11891367B2 · kind B2 · utility
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Key dates
| Filing date | Jun 29, 2021 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | Oct 8, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Method for preparing 3,7-bis(dimethylamino)phenothiazin-5-ylium iodide, the method resulting in a high purity while being very simple to implement and producing high yields. The method uses phenothiazine as a starting material and includes the following steps: a) treating phenothiazine with diiodine, b) treating the reaction medium directly obtained from step a) with dimethylamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.