Patent ID: 8426389

Claim:
Crystalline particles comprising at least about 96% by weight of (R)-3-(4-(2-(2-methyltetrazol-5-yl)pyridin-5-yl)-3-fluoro-phenyl)-5-hydroxymethyl oxazolidin-2-one dihydrogen phosphate, wherein the remainder of the crystalline particles comprises at least one compound selected from the group consisting of wherein the median volume diameter of the crystalline particles is at least about 1.0 μm; 90% of the total particle volume of the particles has an average diameter of at least about 45 μm; and/or 10% of the total particle volume of the particles has an average diameter of at least about 0.5 μm; and wherein the crystalline particles have an X-ray powder diffraction pattern comprising the following peaks: 14.7°, 15.2°, 16.6°, 20.3°, 26.8°, and 28.2°.