POLYMORPHS OF A MGLUR5 RECEPTOR ANTAGONIST

摘要

Disclosed are mono and hemi sulphate salts of 2-chloro-4-[1-(4-fluoro-phenyl)-2,5-dimethyl-1H-imidazol-4-ylethynyl]-pyridine. Crystalline forms of these salts are also disclosed as well as processes for producing them. The use of the salts or crystalline forms for treating acute and/or chronic neurological disorders, in particular anxiety, or for the treatment of chronic and acute pain, protection against liver damage, failure whether drug or disease induced, urinary incontinence, obesity, Fragile-X or Autism.