The present disclosure provides novel solid CB-183,315 formulations which have improved chemical stability. The chemical stability of the solid CB-183,315 is dependent on the process by which the composition is made. Solid preparations of CB-183,315 can be prepared by the following method: (a) forming an aqueous solution of CB-183,315 and at least one sugar that (e.g., sucrose, trehalose or dextran) at a pH of 2-7, preferably pH 6 and (b) converting the aqueous solution to the solid preparation of CB-183,315 (e.g., via lyophilization or spray drying).
