Decitabine lyophilized preparation and preparation method thereof
A freeze-dried preparation and decitabine technology are applied in the field of decitabine freeze-dried preparations and their preparation, which can solve the problems of poor solubility and low purity of freeze-dried preparations, and achieve good stability, high safety, Good batch reproducibility
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Embodiment 1
[0071] Prescription 1
[0072] Decitabine
50g
Potassium dihydrogen phosphate
68g
11.6g
5000ml
Add water for injection to
10000ml
production
1000 bottles
[0073] Configuration and lyophilization steps:
[0074] Weigh the prescribed amount of potassium dihydrogen phosphate and sodium hydroxide, add an appropriate amount of water for injection, and stir to dissolve. Add the prescribed amount of ethanol, add water for injection to the prescribed amount, and stir well. Add activated carbon for needles (about 0.2%) to the above mixed solution, stir at room temperature for 15-30 minutes, filter and decarbonize to obtain an excipient solution, put it in an ice-water bath for 15-60 minutes (about 5°C), and set aside. Weigh the prescribed amount of decitabine, add it to the excipient solution, and dissolve it quickly by ultrasonication and stirring under ice-water bath condition...
Embodiment 2
[0090] Prescription 2
[0091] Decitabine
50g
Potassium dihydrogen phosphate
68g
11.6g
5000ml
Add water for injection to
10000ml
production
1000 bottles
[0092] Weigh the prescribed amount of potassium dihydrogen phosphate and sodium hydroxide, add an appropriate amount of water for injection, and stir to dissolve. Add the prescribed amount of methanol, add water for injection to the prescribed amount, and stir evenly. Add activated carbon for needles (about 0.2%) to the above mixed solution, stir at room temperature for 15-30 minutes, filter and decarbonize to obtain an excipient solution, put it in an ice-water bath for 15-60 minutes (about 5°C), and set aside. Weigh the prescribed amount of decitabine, add it to the excipient solution, and dissolve it quickly by ultrasonication and stirring under ice-water bath conditions. Add activated carbon for needles (about 0.05...
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