Tofacitinib Impurity 281

• Synonyms:

  2-thioxo-1,2,3,7-tetrahydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

• Molecular Formula:

  C6H5N3OS

• Molecular Weight:

  167.19

• Target Alternative Name:

  Tofacitinib

• Product Name Synonym:

  2-thioxo-1,2,3,7-tetrahydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

• CAS Number:

  67831-84-9