The invention relates more particularly to a new salt, cocrystal and formulations of ethyl 8-oxo-9-[3-(1H-benzimidazol-2-yloxy)phenyl]-4,5,6,7,8,9-hexahydro-2H-pyrrolo[3,4-b]quinoline-3-carboxylate of formula (F):to preparations thereof and to the use thereof therapeutically, particularly as selective inhibitors of Aurora A and B kinases, and for their use as anti-cancer agents.更特定而言,本發明係關於式(F)之8-酮基-9-[3-(1H-苯并咪唑-2-基氧基)苯基]-4,5,6,7,8,9-六氫-2H-吡咯并[3,4-b]喹啉-3-甲酸乙酯之新鹽、共晶體及調配物:係關於其製備且係關於其在治療上特別作為奧諾拉(Aurora) A及B激酶之選擇性抑制劑之用途,及其作為抗癌劑之用途。