ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, vol.69, 2013 (ESCI)
In the title compound, C21H21BrClNO4, the dihydropyridine ring adopts a flattened boat conformation. The 3-bromo-5chloro-2-hydroxyphenyl ring forms a dihedral angles of 84.44 (7)degrees with the dihydropyridine mean plane. The molecular conformation is stabilized by an intramolecular O-H center dot center dot center dot O hydrogen bond, with an S(8) ring motif. In the crystal, O-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds link the molecules, forming a three-dimensional network.