title: Ethyl 3-(10-bromo-anthracen-9-yl)-5-methyl-1,2-oxazole-4-carboxyl-ate.
abstract: In the title compound, C21H16BrNO3, the mean planes of the anthracene tricycle and isoxazole ring are inclined to each other at a dihedral angle of 72.12 (7)°. The carb-oxy group is slightly out of the isoxazole mean plane, with a maximum deviation of 0.070 (5) Å for the carbonyl O atom. In the crystal, pairs of weak C-H⋯O hydrogen bonds link the mol-ecules into dimers, and weak C-H⋯N inter-actions further link these dimers into corrugated layers parallel to the bc plane.
authors.affiliation: Department of Chemistry, Ithaca College, 953 Danby Road, Ithaca, NY 14850, USA.
authors.forename: Chun
authors.initials: C
authors.lastname: Li
authors.affiliation: Department of Pharmaceutical & Biomedical Science, The University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Campbell
authors.affiliation: Department of Pharmaceutical & Biomedical Science, The University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Weaver
authors.affiliation: Department of Pharmaceutical & Biomedical Science, The University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
authors.forename: Nathan S
authors.initials: NS
authors.lastname: Duncan
authors.affiliation: Department of Chemistry, Ithaca College, 953 Danby Road, Ithaca, NY 14850, USA.
authors.forename: Janet L
authors.initials: JL
authors.lastname: Hunting
authors.affiliation: Department of Pharmaceutical & Biomedical Science, The University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
authors.forename: Nicholas R
authors.initials: NR
authors.lastname: Natale