The present invention is directed to Tofacitinib mono-malate salt. The Tofacitinib mono-malate salt can be in amorphous form. The invention is also directed towards a pharmaceutical composition comprising Tofacitinib mono-malate and a process for preparing the composition. The Tofacitinib mono-malate salt can be used to prepare Tofacitinib mono-citrate salt. Another aspect of the invention is a process for preparing Tofacitinib mono-citrate. The Tofacitinib mono-malate salt is also useful as a medicament for the treatment of cancer.
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