Acta Cryst. (2013). E69, o251 [ doi:10.1107/S1600536813001025 ]
Abstract: In the title compound, C4H6N4·C3H6O, the pyrimidine-2,4-diamine molecule is nearly planar (r.m.s. deviation = 0.005 Å), with the endocyclic angles covering the range 114.36 (10)-126.31 (10)°. In the crystal, N-HN and N-HO hydrogen bonds link the molecules into ribbons along , and weak C-H interactions consolidate further the crystal packing.
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