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![4'-Chloro-7-(toluene-4-sulfonyl)-7H-[4,7']bis[pyrrolo[2,3-d]pyrimidinyl](tofacitinib impurity IM01-5)](/upload/image/thumb/1_300_300_20250318202503181048.jpg)
4'-Chloro-7-(toluene-4-sulfonyl)-7H-[4,7']bis[pyrrolo[2,3-d]pyrimidinyl](tofacitinib impurity IM01-5)
