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US 5,179,203 AGranted
Thiadiazine compound with a novel crystalline form
AssigneeYoshitomi Pharmaceutical Industries, Ltd.
InventorsHideki Ao, Shinro Setoguchi, Yasuhiko Ishida
Life of this patent
Estimating the term…
Abstract
Novel .beta.-form crystals of 6-(3,6-dihydro-2-oxo-2H-1,3,4-thiadiazin-5-yl)-3,4-dihydro-2(1H)-quinolino ne useful as cardiotonics.
Claims2
6-(3,6-Dihydro-2 -oxo-2H-1,3,4-thiadiazin-5-yl)-3,4-dihydro-2(1H)-quinolinone with a .beta.-crystalline form showing sharp X-ray diffraction peaks at the diffraction angle 2.theta.=19.5.degree., 23.0.degree. and 29.0.degree. when measured with X-ray of Cu-K.alpha. wavelength.
Dependencies are inferred from the claim text.