The invention belongs to the technical field of medicine, in particular to a pemetrexed two sodium freeze-dried powder injection and a preparation method thereof. The pemetrexed two sodium freeze-dried powder injection consists of pemetrexed, two sodium and mannitol, and the mass ratio of mannitol and pemetrexed two sodium is 0.6 to 2: 1. The preparation method comprises: adding water for injection in the tank, then add the prescription dose pemetrexed two sodium, stirring until dissolved after adding mannitol, adjusting pH with hydrochloric acid or sodium hydroxide solution, adding bleaching, activated carbon filtration and membrane filtration, decarburization, packaging, freezing and drying. The pemetrexed two sodium freeze-dried powder injection has good formability, clear appearance of the solution before the freeze, good solubility of the freeze-dried product, good clarity after dissolving, low impurity content, low moisture content, good stability and controllable quality.
【技术实现步骤摘要】
本专利技术属于医药
,涉及到。
技术介绍
培美曲塞二钠,其化学名称为N- _嘧啶-5-基)乙基]苯甲酰]-L谷氨酸二钠盐2.5水合物。分子式为 C20H19N5Na2O6 · 2. 5H20,分子量为516. 38,其化学结构式权利要求1.一种培美曲塞二钠冻干粉针剂,其特征在于,所述培美曲塞二钠冻干粉针剂由培美 曲塞二钠和甘露醇组成,所述培美曲塞二钠和甘露醇的质量比为1 0.6 2. O。2.根据权利要求1所述的培美曲塞二钠冻干粉针剂,其特征在于,所述培美曲塞二钠 和甘露醇的质量比为1 0. 8 1.6,最优选为1 1.2。3.根据权利要求1所述的培美曲塞二钠冻干粉针剂,其特征在于,所述培美曲塞二钠 冻干粉针剂的杂质含量不高于0. 28%,水分含量不高于1. 59%。4.一种权利要求1或3所述的培美曲塞二钠冻干粉针剂的制备方法,其特征在于,所述 的制备方法包括如下步骤(a)于配液罐中先加入注射用水,再加入处方量的培美曲塞二钠,搅拌至完全溶解;(b)再于配液罐中加入处方量的甘露醇,继续搅拌使药液成澄明溶液,用盐酸溶液或氢 氧化钠溶液调节药液PH值,补充注射用水,搅拌均勻;(c)加入药用活性炭,搅拌吸附,采用边脱碳边循环的方式脱碳,除菌过滤;(d)将步骤(c)所得的溶液分装,半加塞,进行冷冻干燥,冷冻干燥分为预冻、一次干燥 和二次干燥三个阶段;预冻阶段抽真空后,充氮气至常压,将搁板温度以0. 5 0. 55 0C /min的速度降 至_3°C,保温0. 5小时,再以0. 70 0. 740C /min的速度降至_30°C,停止降温,保温1小 时 ...
【技术保护点】
1.一种培美曲塞二钠冻干粉针剂,其特征在于,所述培美曲塞二钠冻干粉针剂由培美曲塞二钠和甘露醇组成,所述培美曲塞二钠和甘露醇的质量比为1∶0.6~2.0。
【技术特征摘要】
【专利技术属性】
技术研发人员:马鹰军,钟正明,
申请(专利权)人:海南锦瑞制药股份有限公司,
类型:发明
国别省市:66
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