Fosaprepitant Impurity 19 CAS 172673-20-019
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![Structure of 2-chloro-4-methanesulfonyl-3-[(2,2,2-trifluoroethoxy)methyl]benzoic acid CAS 20100-77-8](https://www.watson-int.com/wp-content/uploads/2023/12/Structure-of-2-chloro-4-methanesulfonyl-3-222-trifluoroethoxymethylbenzoic-acid-CAS-20100-77-8.png "Structure of 2-chloro-4-methanesulfonyl-3-[(2,2,2-trifluoroethoxy)methyl]benzoic acid <span class=\"caps\">CAS</span> 20100-77-8")
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