Crystals
US11680055B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2018 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Sep 27, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/13
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A main object of the present invention is to provide new crystals of (S)-N2-[1-(4-fluorophenyl)ethyl]-4-(1-methyl-1H-pyrazol-4-yl)-N6-(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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.