FORMULATIONS OF COPANLISIB

The present invention relates to: a method of preparing a stable, copanlisib-containing aqueous bulk solution suitable for lyophilisation and for therapeutic applications; a stable, copanlisib-containing bulk solution, of increased solubility which is directly suitable for lyophilisation; a method of lyophilizing such a copanlisib-containing aqueous bulk solution; a stable, lyophilized, copanlisib-containing solid, in particular powder or cake, particularly containing a therapeutic dose of copanlisib in one or two containers, particularly one sealed container; a method of reconstituting such lyophilisates; and a stable, reconstituted, copanlisib-containing solution of increased solubility, suitable for further dilution and for therapeutic applications.