C₉H₈O₂ as versatile synthetic intermediate

4-Hydroxyindan-1-one CAS 40731-98-4 is a valuable bifunctional bicyclic building block​ that merges the reactivity of a phenolic hydroxyl with an aliphatic ketone. Its primary strength lies in its versatility as a key intermediate for pharmaceutical synthesis, enabling access to diverse heterocyclic and polycyclic structures with potential bioactivity. While stable when stored properly, its susceptibility to oxidation and light requires careful handling. For researchers in medicinal chemistry and organic synthesis, it offers a strategic entry point to novel chemical space.