Method for improving stability of polypeptide active pharmaceutical ingredients
A raw material drug and stability technology, which is applied in the field of polypeptide drug preparation, can solve problems such as unfavorable freeze-dried powder uniformity, and achieve effects that are beneficial to uniformity, water change, sublimation and volatilization
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0022] Example 1, a method for improving the stability of a polypeptide raw material drug. After the polypeptide raw material drug is salted, a polypeptide solution containing a counterion ion is obtained, and then the target polypeptide product is prepared by an ultra-low temperature vacuum freeze-drying method.
[0023] The polypeptide raw materials are bivalirudin, octreotide acetate, lanreotide acetate, eptifibatide, cetrorelix acetate, ganirelix acetate, degarelix, liraglutide, oxytocin , thymosin α1, leuprolide acetate, goserelin acetate, terlipressin, or liralotide.
[0024] Salt-forming methods include, but are not limited to, reversed-phase high performance liquid chromatography, ion exchange chromatography, or nanofiltration. Said compensation ion is selected from acetic acid, trifluoroacetic acid or non-salt ion. The polypeptide solution is prepared to a suitable concentration by vacuum concentration method, nanofiltration method or dilution method.
[0025] When ...
Embodiment 2
[0026] Embodiment 2: the preparation of Bivalirudin (Bivalirudin)
[0027] (1) Salt conversion
[0028] Get purified bivalirudin solution 15.32 g, concentrate and remove acetonitrile, carry out salt conversion with reversed-phase high performance liquid chromatography, and the chromatographic conditions are as follows:
[0029] Chromatographic column: 50×250 mm, ODS column;
[0030] Loading volume: 3 g target peptide
[0031] Mobile phase A: 2% trifluoroacetic acid, adjust pH to 1.5~6.5 with ammonia water;
[0032] Mobile Phase B: Acetonitrile
[0033] Mobile phase C: 0.05% trifluoroacetic acid in water
[0034] Salt conversion process: inject bivalirudin solution into the chromatographic column, 5% mobile phase B / (B+A) for ion conversion, and then wash bivalirudin with 50% mobile phase B / (B+C) down.
[0035] Concentrate the desalted bivalirudin to 150 mg / ml and prepare for lyophilization.
[0036] The purity of bivalirudin determined by HPLC: 99.61%, the content of the...
Embodiment 3
[0044] Embodiment 3: Preparation of Degarelix Acetate
[0045] (1) Salt conversion
[0046] Get 12.34 g of degarelix acetate solution after purification, concentrate to remove acetonitrile, and carry out salt conversion with reversed-phase high-performance liquid chromatography, and the chromatographic conditions are as follows:
[0047] Chromatographic column: 50×250 mm, ODS column;
[0048] Loading volume: 3 g target peptide
[0049] Mobile phase A: 50 mM ammonium acetate;
[0050] Mobile Phase B: Acetonitrile
[0051] Mobile phase C: 0.05% acetic acid in water
[0052] Salt conversion process: inject degarelix solution into the chromatographic column, 5% mobile phase B / (B+A) for ion conversion, and then wash degarelix with 50% mobile phase B / (B+C) down.
[0053] Concentrate desalted degarelix to 50 mg / ml for lyophilization.
[0054] The purity of degarelix determined by HPLC: 99.33%, the content of the target substance was 11.39 g, and the yield was 92.3%.
[0055] ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com