2-Pentanone

Its role is structural and reactive: the ketone functionality is essential for building the pyrazolopyrimidinone core of sildenafil through condensation and cyclization reactions. It is not used merely to dissolve reactants; it participates directly in forming the molecular framework of the drug. In the synthesis of sildenafil citrate, 2-pentanone serves as a main intermediate.

CAS No 107-87-9
Molecular Formula C5H10O
Molecular Weight 86.13 g/mol
Synonyms pentan-2-one

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