Fun Hoong-Kun, Quah Ching Kheng, Parveen Mehtab, Ghalib Raza Murad, Mehdi Sayed Hasan
Acta Crystallogr Sect E Struct Rep Online. 2009 May 7;65(Pt 6):o1209. doi: 10.1107/S1600536809016067.
In the title compound, C(12)H(10)O(4), the five-membered ring adopts an envelope conformation, with the Csp(3) atom at the flap [deviation = 0.145 (2) Å]. In the crystal structure, mol-ecules are linked by inter-molecular O-H⋯O and C-H⋯O hydrogen bonds, forming a three-dimensional network.