Hydromorphone HCl Polymorphs Stability
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Solution Overview
Problem
Current forms of hydromorphone hydrochloride (HCl) have limitations in terms of purity and stability, which can affect their pharmacological efficacy and administration, particularly for severe pain management.
Innovation Solution
Development of four novel forms of hydromorphone HCl (Forms B, C, D, and an amorphous form) characterized by unique X-ray powder diffraction patterns and thermal properties, which can be produced and used in combination with the known form (Form A) to enhance therapeutic effects and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If known form (Form A) of hydromorphone HCl is used, then commercial availability and established administration routes are ensured, but purity and stability are limited
Solution Approach 1:
The patent applies parameter changes by discovering and utilizing different polymorphic forms (Forms B, C, D, and amorphous) of hydromorphone HCl, each with distinct crystal structures and physical properties. These polymorphic variations enable improved stability and diverse pharmaceutical formulation options while maintaining the core analgesic functionality of the compound.
2Reliability
If novel polymorphic forms (Forms B, C, D, amorphous) are developed, then purity and stability are improved, but manufacturing complexity increases
Solution Approach 1:
The patent utilizes phase transitions by employing specific crystallization conditions and solvent systems to transform hydromorphone HCl into desired polymorphic forms. The manufacturing processes involve controlled phase transitions from solution or melt states to specific crystal structures (Forms B, C, D) or amorphous states, enabling purification and stability enhancement through deliberate phase change management.
Data Source
AI summary
Hydromorphone hydrochloride forms are disclosed which are useful as analgesic agents either in combination with or as replacements for hydromorphone hydrochloride.