4-Chloro-7H-pyrrolo[2,3-d]pyrimidine

It is mainly used to synthesize various biologically active compounds, most notably the anti-arthritis drug tofacitinib (brand name Xeljanz) 4-Chloro-7H-pyrrolo(2,3-d)pyrimidine is an important pharmaceutical intermediate and a versatile building block in organic synthesis.

API Name Tofacitinib citrate
CAS No 3680-69-1
Molecular Formula C6H4ClN3
Molecular Weight 153.57 g/mol
Synonyms 4-chloro-7H-pyrrolo[2,3-d]pyrimidine

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