RUC-4 Acetic Acid Formulations for Storage Stability
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Solution Overview
Problem
There is a need for stable solid and liquid formulations of RUC-4, an inhibitor of the platelet αIIbβ3 receptor, that maintain stability under various storage conditions.
Innovation Solution
The development of compositions comprising RUC-4 and acetic acid, with specific molar ratios and additional excipients to adjust osmolality and stability, along with methods for preparing lyophilized formulations through freezing and sublimation, and solutions for injection administration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RUC-4 is formulated as a solid or liquid composition, then it can be stored and administered, but it degrades under various storage conditions
Solution Approach 1:
The patent uses acetic acid as an intermediary substance to stabilize RUC-4. The acetic acid forms a complex with RUC-4 that prevents degradation, acting as a protective mediator between the drug and degrading environmental factors such as moisture and oxygen.
Solution Approach 2:
The patent stabilizes RUC-4 by changing the pH parameter of the formulation to an acidic range (pH 3-6). This parameter change creates a chemical environment that prevents hydrolysis and other pH-sensitive degradation pathways, thereby improving stability during storage.
2Reliability
If RUC-4 is formulated with excipients to improve stability, then storage stability is enhanced, but the formulation complexity increases
Solution Approach 1:
The patent extracts and focuses on a single key excipient (acetic acid) as the primary stabilizing agent, rather than using multiple complex excipients. This simplification approach maintains stability while reducing formulation complexity compared to multi-component systems.
3Reliability
If RUC-4 is prepared as a lyophilized solid, then it achieves long-term stability, but the manufacturing process becomes more complex
Solution Approach 1:
The patent incorporates acetic acid into the formulation before lyophilization, performing the stabilization action in advance. This preliminary incorporation of the stabilizing agent simplifies the overall manufacturing process by preventing degradation during the lyophilization steps, eliminating the need for post-processing stabilization measures.
4Ease of operation
If RUC-4 is formulated for injection, then it can be administered effectively, but stability during storage and handling is compromised
Solution Approach 1:
The patent adjusts the pH parameter of the injectable formulation to an acidic range that simultaneously ensures stability during storage and maintains solubility for injection. This parameter optimization allows the formulation to meet both storage stability requirements and injectability requirements.
Solution Approach 2:
The patent creates a composite formulation system where RUC-4 is combined with acetic acid and other compatible excipients to form a stable injectable solution. This composite approach allows the formulation to maintain stability during storage while remaining suitable for injection administration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The formulations exhibit enhanced chemical and physical stability, maintaining stability for extended periods under varying temperature and humidity conditions, suitable for injection and self-administration.
Implementation Method 1
freezing the solution
Implementation Method 2
removing the water from the frozen solution by sublimation at low pressure
Implementation Method 3
removing the water from the frozen solution by sublimation at low pressure
Data Source
AI summary
The present disclosure relates to solid and liquid formulations of RUC-4 that are stable under a range of storage conditions.