Crystal structure of 3-(3-oxo-2,3,4,4a,5,6-hexa­hydro­benzo[h]cinnolin-2-yl)propionic acid

The asymmetric unit of the title compound, C15H16N2O3, contains two independent mol-ecules, which present a different conformation of the carb-oxy-lic acid side chain [C-C-C-OH torsion angles = 65.3 (7) and -170.1 (5)°]. In both mol-ecules, the di-hydro-pyridazinone ring adopts a geometry inter-mediate between a twisted-boat and a half-chair conformation… CONTINUE READING