Ganciclovir powder-injection for injection
A technology of ganciclovir and water for injection, applied in the field of pharmaceutical preparations, can solve the problems of poor anti-cytomegalovirus effect, excessive doses, compliance problems of HIV patients, etc.
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preparation example 1
[0108] Preparation example 1. Preparation of powder injection containing ganciclovir
[0109] formula:
[0110] Ganciclovir
250mg,
39mg,
l5mg,
1-deoxy-1-(methylamino)-D-sorbitol
l5mg,
pH regulator
To pH11.0,
Water for Injection
Add an appropriate amount to 2ml.
[0111] Preparation:
[0112] (1) Weigh the prescription amount of the main medicine and auxiliary materials (except sodium hydroxide and pH adjuster), place them in a stainless steel barrel, add about 80% of the prescription amount of water for injection, stir to disperse, and add the prescription amount of sodium hydroxide , Continue to stir to dissolve the components, then add 0.1% (w / v) activated carbon according to the volume of the solution, stir for 30 minutes, filter and decarbonize, and add water for injection to nearly the full amount of the prescription.
[0113] (2) Take a sample of the filtrate, measure the pH value, and adjust to the specified value with a ...
preparation example 2
[0118] Supplementary Preparation Example 2: Refer to the method of Preparation Example 1, except that the amount of 1-deoxy-1-(methylamino)-D-sorbitol is adjusted to 0mg, 2mg, 5mg, 7.5mg, 10mg, 12.5mg, 17.5mg, 20mg, 22.5mg, 25mg, 30mg, 50mg, the powder injection numbers obtained are Ex121, Ex122, Ex123, Ex124, Ex125, Ex126, Ex127, Ex128, Ex129, Ex130, Ex131, Ex132, respectively.
preparation example 3
[0119] Supplementary Preparation Example 3: Refer to the method of Preparation Example 1, except that the amount of 1-deoxy-1-(methylamino)-D-sorbitol is 10mg, and the amount of sodium chloride is 0mg, 5mg, 10mg, 15mg, 20mg, 25mg, or 50mg, the powder injection numbers obtained are Ex141, Ex142, Ex143, Ex144, Ex145, Ex146, Ex147 respectively.
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