Di­bromo­phakellin methanol hemisolvate

The title compound, C₁₁H₁₁Br₂N₅O·0.5CH₃OH, was isolated from algae (Laurencia majuscula Lucas) collected from the South China Sea and its crystal structure was determined. It exhibits mild antibacterial and antineoplastic activity. The crystal structure has supramolecular layers with N—H⋯O and N—H⋯N hydrogen bonds. The methanol solvent mol­ecule is threefold disordered.