Abstract: [Problem] A crystal of (2R,5S)-4-(3-chloro-4-cyanophenyl)-N-(2-cyclopropylpyrimidin-5-yl)-2,5-dimethylpiperazine-1-carboxamide with excellent activity as an androgen receptor (AR) antagonistic compound, the salts thereof, or the solvate thereof, which is suitable for industrialization as a bulk drug of pharmaceutical products; a pharmaceutical composition comprising the crystal as an active ingredient; and the pharmaceutical composition which is the AR antagonistic drug are provided. [Solution] A01-type crystal of monohydrate, A01-type crystal of hydrochloride, A01-type crystal of hydrobromide, and A01-type crystal of methanesulfonate of (2R,5S)-4-(3-chloro-4-cyanophenyl)-N-(2-cyclopropylpyrimidin-5-yl)-2,5-dimethylpiperazine-1-carboxamide, which have certain crystal forms, are provided.

Abstract: Provided are crystals of compound A which have properties suitable for industrial production. MEANS FOR SOLVING As the results of intensive studies to provide crystals of compound A having an inhibitory activity on the kinase activity of an EML4-ALK fusion protein and a mutant EGFR protein, crystals of compound A were found. Moreover, it was found that A04-type crystal of compound A, from among the aforesaid crystals of compound A, unexpectedly have preferred properties as a drug substance.