anhydrous crystals i and v and 3- (2-cyanophenyl) -5- (2-pyridyl) -1-phenyl-1,2-dihydropyridin-2-one hydrate crystal and hydrate crystal preparation process

摘要

1,2-dihydropyridine Compound Crystal and method for producing the same. The present invention relates to 3- (2-cyanophenyl) -5- (2-pyridyl) -1 -1-phenyl-1,2-dihydropyridin-2-one crystals and production processes thereof.