Patent ID: 7439373

Claim:
A crystalline mycophenolate sodium selected from the group consisting of a crystalline mycophenolate sodium form (M4) characterized by a powder XRD pattern with peaks at 7.1, 7.6, 10.7, 14.0 and 16.3±0.2 degrees 2-theta; a crystalline mycophenolate sodium form (Form M5) characterized by a powder XRD pattern with peaks at 9.8, 17.4, 22.2, 27.1, and 31.7±0.2 degrees 2-theta; a crystalline mycophenolate sodium form (Form M6) characterized by a powder XRD pattern with peaks at 6.1, 7.9, 14.6, 18.2 and 18.5±0.2 degrees 2-theta; a crystalline mycophenolate sodium form (Form M7) characterized by a powder XRD pattern with peaks at 13.0, 13.7, 17.6, 22.6, and 23.6±0.2 degrees 2-theta; a crystalline mycophenolate sodium form (Form M8) characterized by a powder XRD pattern with peaks at 5.4, 7.5, 9.8, 10.6, 18.2 and 20.9±0.2 degrees 2-theta; a crystalline mycophenolate sodium form (Form M9) characterized by a powder XRD pattern with peaks at 5.6, 6.0, 7.5 and 9.9±0.2 degrees 2-theta; a crystalline mycophenolate sodium form (Form M10) characterized by a powder XRD pattern with peaks at 5.8, 9.0, 9.3, and 19.7±0.2 degrees 2-theta; a crystalline mycophenolate sodium form (Form M11) characterized by a powder XRD pattern with peaks at 10.3, 4.7, 5.3, 6.5, 8.2, 9.9, 15.5 and 19.1±0.2 degrees 2-theta and amorphous mycophenolate sodium form (Form M12) characterized by an FTIR spectrum with peaks at 1735, 1560 and 1133 cm −1 .