| 摘要 |
Provided herein are novel solid state forms of fesoterodine intermediates, (R)-4-benzyloxy-3-(3-diisopropylamino-1-phenylpropyl)-benzoic acid and (R)-[4-benzyloxy-3-(3-diisopropylamino-1-phenylpropyl)-phenyl]-methanol, and processes for their preparation thereof. The solid state intermediates are useful for preparing fesoterodine or a pharmaceutically acceptable salt thereof in high purity.
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