摘要:
The present invention provides a novel intermediate of ethyl 6-[2-(4,4-dimethylthiochroman-6-yl)ethynyl] nicotinate or a pharmaceutically acceptable salt thereof and a process for its preparation. The present invention also provides for the preparation of ethyl 6-[2-(4,4-dimethylthiochroman-6-yl)ethynyl] nicotinate of Formula I or a pharmaceutically acceptable salt thereof using the intermediate.
摘要:
A process for preparing neutral esomeprazole in an amorphous form is provided comprising (a) providing an aqueous solution comprising a salt of esomeprazole; (b) neutralizing the solution with a neutralization agent to provide a neutralized solution; (c) contacting the neutralized solution with an extracting solvent; and (d) recovering the neutral esomeprazole in an amorphous form.
摘要:
Crystalline forms of almotriptan and almotriptan malate are disclosed. Processes for their preparation and pharmaceutical compositions containing the same are also disclosed. The amorphous form of almotriptan malate, processes for its preparation and a pharmaceutical composition containing the same are also disclosed
摘要:
Mifepristone substantially in polymorph form M is provided. Also provided is a process for the preparation of polymorph form M of mifepristone comprising the steps of (a) dissolving crude mifepristone in a polar solvent at an elevated temperature to obtain a clear solution; (b) cooling the solution to a temperature and for a time period sufficient to form a precipitate of mifepristone crystals; and (c) isolating the precipitate of mifepristone crystals to obtain the polymorph form M of mifepristone.