A novel anhydrous crystalline form of 1-benzhydryl-4- allylpiperazine dihydrochloride which possesses absorption bands in its IR-spectra (tablets with nujol mulls) at 646 and 665 cm-1, a ratio A646/A661 = 0.6, a specific triplet at 915, 926 and 952 cm-1, a ratio A926/A952 = 0.8, absence of a band at 3380 cm-1 and a strongest X-ray diffraction band at 27.4 2θ, corresponding to 37.8 nm and good water solubility properties rendering it suitable for use in preparation for sterile injectable solutions is prepared by acidifying solutions of 1-benzhydryl-4-allylpiperazine in aqueous alcoholic media.
一种新型无
水结晶形式的 1-二苯甲酰基-4-烯丙基
哌嗪二盐酸盐,在其红外光谱(含 nujol mulls 的片剂)中具有 646 和 665 cm-1 处的吸收带,比率 A646/A661 = 0.6,915、926 和 952 cm-1 处的特定三重,比率 A926/A952 = 0.8,没有 3380 cm-1 处的吸收带,以及 27.4 2θ 处最强的 X 射线衍射带,相当于 37.8 nm,具有良好的
水溶性,使其适合用于生产。此外,1-二苯甲酰基-4-烯丙基
哌嗪在
水醇介质中的酸化溶液具有良好的
水溶性,适合用于制备无菌注射液。