NOVEL CRYSTALS OF 1,3,4-OXAZIAZOLE DERIVATIVE, PROCESS FOR PRODUCING THE SAME AND PHARMACEUTICAL AGENT CONTAINING THE SAME AS ACTIVE INGREDIENT

摘要

Form 2 crystals of 2-[5-amino-6-oxo-2-phenyl-1,6-dihydro-1-pyrimidyl]-N-[1-( 2- [5-t-butyl-1,3,4-oxadiazolyl]carbonyl)-2-R,S)-methylpropyl]acetamide (I); a process for producing the crystals; and medicines containing the same as the active ingredient.