A NOVEL POLYMORPH OF EMTRICITABINE AND A PROCESS FOR PREPARING OF THE SAME
申请人:Lupin Ltd.
公开号:EP2350065A1
公开(公告)日:2011-08-03
NOVEL POLYMORPH OF EMTRICITABINE AND A PROCESS FOR PREPARING OF THE SAME
申请人:Singh Girij Pal
公开号:US20110288298A1
公开(公告)日:2011-11-24
A polymorph of emtricitabine, wherein said polymorph displays angular positions of characteristic peaks in powder X-ray diffraction pattern 13.61±0.2, 15.54±0.2, 19.49±0.2, 20.55±0.2, 25.89±0.2, 28.09±0.2 and 29.10±0.2. A pharmaceutical composition comprising a polymorph of emtricitabine displaying angular positions of characteristic peaks in powder X-ray diffraction pattern 13.61±0.2, 15.54±0.2, 19.49±0.2, 20.55±0.2, 25.89±0.2, 28.09±0.2 and 29.10±0.2. A process for the preparation of a polymorph of emtricitabine comprising the steps of (a) dissolving crude emtricitabine in polar organic solvent by heating at a temperature of at least 40° C. and not more than 150° C. to form a reaction mixture optionally decreasing the concentration of polar organic solvent in said reaction mixture; cooling the reaction mixture obtained in step (a); and separating the solid from the cooled reaction mixture resulted in step (b).
[EN] A NOVEL POLYMORPH OF EMTRICITABINE AND A PROCESS FOR PREPARING OF THE SAME<br/>[FR] NOUVEAU POLYMORPHE DE L'EMTRICITABINE ET PROCÉDÉ POUR SA PRÉPARATION
申请人:LUPIN LTD
公开号:WO2010055526A1
公开(公告)日:2010-05-20
A polymorph of emtricitabine, wherein said polymorph displays angular positions of characteristic peaks in powder X-ray diffraction pattern 13.61± 0.2, 15.54± 0.2, 19.49± 0.2, 20.55± 0.2, 25.89± 0.2, 28.09± 0.2 and 29.10± 0.2. A pharmaceutical composition comprising a polymorph of emtricitabine displaying angular positions of characteristic peaks in powder X-ray diffraction pattern 13.61± 0.2, 15.54± 0.2, 19.49± 0.2, 20.55± 0.2, 25.89± 0.2, 28.09± 0.2 and 29.10± 0.2. A process for the preparation of a polymorph of emtricitabine comprising the steps of (a) dissolving crude emtricitabine in polar organic solvent by heating at a temperature of at least 40°C and not more than 150°C to form a reaction mixture optionally decreasing the concentration of polar organic solvent in said reaction mixture; cooling the reaction mixture obtained in step (a); and separating the solid from the cooled reaction mixture resulted in step (b).