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Tolterodine tartrate is an anticholinergic muscle relaxant used to treat urinary frequency, urinary urgency, and incontinence in people with unstable bladders. An improved, cost-effective, and impurity-free process for tolterodine tartrate suitable for large-scale commercial production is described here by addressing various scale-up and impurity issues.
Srinivas et al. (Sat,) studied this question.