CRYSTAL FORM OF ALKALI METAL SALT AND/OR INORGANIC ACID ADDITION SALT OF DARINAPARSIN, AND FORMULATION THEREOF

摘要

The present invention addresses the problem of providing a stable crystal form of darinaparsin, a method for producing the same, and a formulation containing the crystal form. The present invention provides a crystal form of a compound of an alkali metal salt and/or inorganic acid addition salt of darinaparsin, or a solvate thereof. In this crystal form, the pH is 4.5-7.3 when the crystal form of an alkali metal salt and/or inorganic acid addition salt of darinaparsin, or a solvate thereof, is dissolved in purified water.