title: 1,3-Dihydr-oxy-9,10-dioxo-9,10-di-hydro-anthracene-2-carbaldehyde.
abstract: The title compound, C(15)H(8)O(5), also known as nordamnacanthal, was isolated from the Malaysian Morinda citrifolia L. The 20 non-H atoms are coplanar. The structure is stabilized by intra-molecular O-H⋯O hydrogen bonds and inter-molecular O-H⋯O and C-H⋯O hydrogen bonds, forming bilayers of mol-ecular tapes with alternating stacking directions along the a axis.
authors.forename: Khalijah
authors.initials: K
authors.lastname: Awang
authors.forename: Nor Hadiani
authors.initials: NH
authors.lastname: Ismail
authors.forename: Rohaya
authors.initials: R
authors.lastname: Ahmad
authors.forename: Nor Hafizoh
authors.initials: NH
authors.lastname: Saidan
authors.forename: Pascal
authors.initials: P
authors.lastname: Retailleau