The 3-isoxazoline ring in the title compound, C10H10N2O2, adopts a fla
ttened envelope conformation. The interplanar angle between the two ri
ng systems is 31.71(5)degrees, but the connecting single bond may indi
cate a certain degree of conjugation. The crystal packing is stabilize
d by van der Waals interactions. Some close C-H ... O contacts are obs
erved, as well as stacking of the 3-isoxazoline ring system.