2-Propynyl 2-hydroxy­benzoate

The title compound, C(10)H(8)O(3), has been synthesized as part of our investigations into the generation of new anti­bacterial agents and serves as a building block for the synthesis of compound libraries. The compound crystallizes with two independent mol­ecules in the asymmetric unit. The transoid propynyl ester groups are coplanar with the 2-hydroxy­benzoate group with maximum deviations of −0.3507 (3) and 0.1591 (3) Å for the terminal carbons, with intra­molecular O—H⋯O hydrogen bonding providing rigidity to the structure and ensuring that the reactivity of the alkyne is not compromised by steric factors. The propynyl group forms inter­molecular C—H⋯O inter­actions with the phenolic O atom. Supra­molecular chains along the b axis are found for both mol­ecules with links by weak O—H⋯O inter­molecular inter­actions in the first independent mol­ecule and C—H⋯O inter­actions in the second.