organic compounds
Open access
The title compound (systematic name: 4-oxopentanoic acid), C5H8O3, is close to planar (r.m.s. deviation = 0.0762 Å). In the crystal, the molecules interact via O—HO hydrogen bonds in which the hydroxy O atoms act as donors and the ketone O atoms in adjacent molecules as acceptors, forming C(7) chains along [20-1].
organic compounds
Open access
In the crystal structure of the title compound, C4H9NO2, the O—HN hydrogen bonds link the molecules into supramolecular chains extending along the b-axis direction. The conformation of the NOH group in the nearly planar (r.m.s. deviation = 0.0546 Å) ethyl acetohydroximate molecule is trans to N=C.