Patent ID: 7465831

Claim:
A process for making levalbuterol HCl Polymorph A comprising: suspending or forming a first slurry of the R enantiomer of albuterol D-dibenzoyl tartrate complex in at least a first organic solvent; adding HCl to the suspension or slurry of the solid R enantiomer of albuterol D-dibenzoyl tartrate complex until the pure levalbuterol HCl Polymorph A is formed; and isolating the pure levalbuterol HCl Polymorph A; wherein said levalbuterol HCl Polymorph A is characterized by an X-ray diffraction pattern containing peaks at 10.7, 15.3, 15.6, 19.1 and 23.9 degree two-theta±0.2 degree two-theta.