title: 1,2;5,6-Di-O-isopropyl-idene-3-C-nitro-methyl-α-d-allofuran-ose.
abstract: The mol-ecule of the title compound, C(13)H(21)NO(8), consists of two methyl-enedi-oxy rings and one tetra-hydro-furan ring. In the crystal, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into helical chains running along the 6(1) screw axis. Weak inter-molecular C-H⋯O hydrogen bonds help to stabilize the crystal packing. Voids of 245 Å(3) per unit cell occur.
authors.affiliation: New Drug Reseach & Development Center, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
authors.forename: Qiurong
authors.initials: Q
authors.lastname: Zhang
authors.forename: Yu
authors.initials: Y
authors.lastname: Ke
authors.forename: Weiyan
authors.initials: W
authors.lastname: Cheng
authors.forename: Pengyun
authors.initials: P
authors.lastname: Li
authors.forename: Hongmin
authors.initials: H
authors.lastname: Liu