Patent ID: 8691981

Claim:
A crystalline form of the MSA salt of Compound I: wherein said Form N-1 and/or N-2 has characteristic peaks in a powder X-ray diffraction pattern at values of 2θ of (CuKα λ=1.5418 Å): 5.1±0.1, 6.5±0.1, 8.5±0.1, 10.1±0.1, 10.5±0.1, 11.3±0.1, 14.4±0.1, 15.2±0.1, 17.8±0.1, 19.7±0.1, 21.6±0.1, wherein measurement of said crystalline form is at room temperature based on a high quality pattern collected with a diffractometer (CuKα) with a spinning capillary with 2θ calibrated with a NIST or other suitable standard.