title: 4-Methyl-2H-1,3-oxazine-2,6(3H)-dione.
abstract: In the title compound, C(5)H(5)NO(3), the planar (maximum deviation = 0.075 Å for the ring O atom) mol-ecules form N-H⋯O hydrogen bonds in a zigzag chain (C-O⋯N bond angle ≃ 140°) between glide-related mol-ecules.
authors.affiliation: Department of Chemistry, Bucknell University, Lewisburg, PA 17837, USA.
authors.forename: Damon
authors.initials: D
authors.lastname: Parrish
authors.forename: Fredrick
authors.initials: F
authors.lastname: Leuschner
authors.forename: Gretchen M
authors.initials: GM
authors.lastname: Rehberg
authors.forename: Margaret E
authors.initials: ME
authors.lastname: Kastner