Patent ID: 8034837

Claim:
Polymorphic form B of 6-(4-chlorophenyl)-2,2-dimethyl-7-phenyl-2,3-dihydro-1H-pyrrolizin-5-ylacetic acid of the formula having the following peaks, in ppm, in the solid state 13 C-NMR spectrum, with adamantane as external reference standard; CH group δ=29.45 ppm: 25.1, 29.0, 30.5, 41.6, 44.1, 58.1, 115.2, 117.6, 123.4, 124.3, 127.3, 128.0, 129.5, 132.7, 133.9, 136.4, 137.3, 180.0.