申请人:NIPPON SHINYAKU CO., LTD.
公开号:US20200223823A1
公开(公告)日:2020-07-16
A main object of the present invention is to provide new crystals of (S)-N
2
-[1-(4-fluorophenyl)ethyl]-4-(1-methyl-1H-pyrazol-4-yl)-N
6
-(pyrazin-2-yl)pyridine-2,6-diamine maleate (hereinafter, referred to as “compound A”). A Form-I crystal of the compound A, showing diffraction peaks in its X-ray powder diffraction spectrum at least at the following angles of diffraction 2θ: 6.9 degrees, 9.4 degrees, 12.5 degrees, 15.1 degrees, 16.4 degrees, 18.3 degrees, 19.0 degrees, 24.9 degrees, 25.4 degrees, 27.3 degrees, and 27.7 degrees, wherein X-ray powder diffraction spectrum is obtained by using Cu Kα radiation (λ=1.54 Å). A Form-II crystal of the compound A, showing diffraction peaks in its X-ray powder diffraction spectrum at least at the following angles of diffraction 2θ: 6.9 degrees, 9.2 degrees, 12.4 degrees, 14.8 degrees, 16.5 degrees, 18.1 degrees, 18.5 degrees, 19.8 degrees, 23.6 degrees, 24.9 degrees, and 27.7 degrees, wherein X-ray powder diffraction spectrum is obtained by using Cu Kα radiation (λ=1.54 Å).
本发明的主要目的是提供(S)-N2-[1-(4-氟苯基)乙基]-4-(1-甲基-1H-吡唑-4-基)-N6-(吡嗪-2-基)吡啶-2,6-二胺马来酸盐(以下简称“A化合物”)的新晶体。A化合物的I型晶体,在其X射线粉末衍射谱中至少显示以下衍射角2θ的衍射峰:6.9度,9.4度,12.5度,15.1度,16.4度,18.3度,19.0度,24.9度,25.4度,27.3度和27.7度,其中X射线粉末衍射谱是使用Cu Kα辐射(λ=1.54Å)获得的。A化合物的II型晶体,在其X射线粉末衍射谱中至少显示以下衍射角2θ的衍射峰:6.9度,9.2度,12.4度,14.8度,16.5度,18.1度,18.5度,19.8度,23.6度,24.9度和27.7度,其中X射线粉末衍射谱是使用Cu Kα辐射(λ=1.54Å)获得的。