title: 6-Meth-oxy-N-methyl-3-nitro-4-nitro-methyl-4H-chromen-2-amine.
abstract: In the title compound, C(12)H(13)N(3)O(6), the dihydro-pyran ring adopts a near screw-boat conformation. The dihedral angle between the mean planes of the benzene and dihydro-pyran rings is 6.35 (5)°. An intra-molecular N-H⋯O hydrogen bond generates an S(6) motif, which stabilizes the mol-ecular conformation. In the crystal, weak inter-molecular C-H⋯O, N-H⋯O and C-H⋯π hydrogen bonds contribute to the stabilization of the packing.
authors.forename: J
authors.initials: J
authors.lastname: Muthukumaran
authors.forename: A
authors.initials: A
authors.lastname: Parthiban
authors.forename: P
authors.initials: P
authors.lastname: Manivel
authors.forename: H Surya Prakash
authors.initials: HS
authors.lastname: Rao
authors.forename: R
authors.initials: R
authors.lastname: Krishna