Nitro-furan-toin methanol monosolvate.

The anti-biotic nitro-furan-toin {systematic name: (E)-1-[(5-nitro-2-fur-yl)methyl-idene-amino]-imidazolidine-2,4-dione} crys-tallizes as a methanol monosolvate, C(8)H(6)N(4)O(5)·CH(4)O. The nitro-furan-toin mol-ecule adopts a nearly planar conformation (r.m.s. deviation = 0.0344 Å). Hydrogen bonds involve the co-operative N-H⋯O-H⋯O heterosynthons between the cyclic imide of nitro-furan-toin and methanol O-H groups. There are also C-H⋯O hydrogen bonds involving the nitro-furan-toin mol-ecules which support the key hydrogen-bonding synthon. The overall crystal packing is further assisted by weak C-H⋯O inter-actions, giving a herringbone pattern.