| abstract |
Crystals of a salt, or hydrate thereof, of a compound represented by formula (I): ** (See formula) ** in which the crystals are α crystals, β crystals or γ crystals, in which the crystals α are crystals of a disodium trihydrate salt of the compound represented by formula (I) for which 2θ (°) shows peaks in X-ray powder diffractometry using Cu as radiation source at 5.72 ± 0.2, 10 , 10 ± 0.2, 10.96 ± 0.2, 11.98 ± 0.2, 13.34 ± 0.2, 15.02 ± 0.2, 17.26 ± 0.2, 20.26 ± 0.2, 21.66 ± 0.2, and 22.36 ± 0.2, in which the β and γ crystals are crystals of a disodium salt, or a hydrate thereof, of the compound represented by the formula (I), in which in the case of β crystals, 2θθ (°) shows peaks in powder X-ray diffractometry using Cu as radiation source at 5.82 ± 0.2, 9.78 ± 0, 2, 11.18 ± 0.2, 12.26 ± 0.2, 12.86 ± 0.2, 15.38 ± 0.2, 16.34 ± 0.2, 18.34 ± 0.2, 19.68 ± 0.2, and 22.54 ± 0.2, and in the case of γ crystals, 2θ (°) shows pic os in X-ray powder diffractometry using Cu as radiation source at 5.80 ± 0.2, 9.86 ± 0.2, 12.12 ± 0.2, 12.86 ± 0.2, 15, 04 ± 0.2, 16.30 ± 0.2, 18.28 ± 0.2, 19.90 ± 0.2, 20.52 ± 0.2, and 22.58 ± 0.2. |