Crystalline levosalbutamol sulphate and polymorphic forms...

Details Crystalline levosalbutamol sulphate and polymorphic forms... Crystalline levosalbutamol sulphate and polymorphic forms...

2011-03-29

2011-03-29

Katakam, Sudhakar (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C514S686000

Reexamination Certificate

active

07915451

ABSTRACT:
The invention provides three polymorphic forms of crystalline levosalbutamol sulphate designated herein as Forms I, II and III.Crystalline levosalbutamol sulphate Form I is characterised by a powder XRD pattern with peaks at 10.8, 11.9, 13.0, 18.3, 28.5±0.2 degrees 2 theta.Crystalline levosalbutamol sulphate Form II is characterised by a powder XRD pattern with peaks at 8.7, 9.6, 15.2, 15.7, 19.1, 27.2, 30.7±0.2 degrees 2 theta.Crystalline levosalbutamol sulphate Form III is characterised by a powder XRD pattern with peaks at 5.5, 6.9, 7.3, 18.7±0.2 degrees 2 theta.Processes for making the new polymorphic forms and pharmaceutical compositions comprising them are also provided.

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patent: WO 2004/052835 (2004-06-01), None

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