Add time:07/26/2019 Source:sciencedirect.com
There are quite substantial number of impurities related to dexamethasone or mometasone which cannot be made from respective Active Pharmaceutical Ingredients but from common intermediate 21-acetoxy-17α-hydroxy-16α-methyl-pregna-1,4,9(11)-triene-3,20-dione (12). As such, a robust and economical synthesis of this key intermediate is important for delivering a resilient and economically viable supply chain for these impurities. Therefore, it is critical to have a robust and economically viable process to synthesize the intermediate 12 in good yield and quality. We report here an improved synthesis of 12 and eight impurities related to dexamethasone and mometasone from this common intermediate.
We also recommend Trading Suppliers and Manufacturers of (17α)-17-Hydroxy-3-oxo-19-norpregna-5(10),9(11)-diene-21-nitrile (cas 106111-42-6). Pls Click Website Link as below: cas 106111-42-6 suppliers
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View