4- (2-Aminopyridin-4-yl) -3- (4-fluorophenyl) -1- (1,4,5,6-tetrahydro-6-oxopyridazin-3-yl) -1H-pyrazolemethanesulfone NOVEL CRYSTAL FORM AND METHOD FOR PRODUCING THE SAME
The present invention relates to 4- (2-aminopyridin-4-yl) -3- (4-fluorophenyl) -1- (1,4,5,6-tetrahydro-6-oxopyridazine-3, which is useful as a pharmaceutical product. -Yl) -1H-pyrazole The present invention relates to a novel crystal form of methanesulfonate and a method for producing the same. The present invention provides two stable crystal polymorphs called A-type crystals and B-type crystals, and a production method capable of obtaining each of these crystal polymorphs as a single crystal.本発明は、医薬品として有用な、４－（２－アミノピリジン－４－イル）－３－（４－フルオロフェニル）－１－（１，４，５，６－テトラヒドロ－６－オキソピリダジン－３－イル）－１Ｈ－ピラゾール メタンスルホン酸塩の新規結晶形及びその製造方法に関する。本発明は、Ａ型結晶及びＢ型結晶と称される安定な２つの結晶多形と、かかる結晶多形をそれぞれ単一の結晶として得ることができる製造方法とを提供する。
