Dezocine Crystal Form Solubility and Stability via Phase Transition
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Solution Overview
Problem
Existing dezocine medications have poor solubility, affecting their stability, bioavailability, and therapeutic effectiveness, which hinders the development of effective formulations and absorption in the human body.
Innovation Solution
A new crystal form of dezocine with improved solubility and stability is developed, achieved through a method involving the dissolution of dezocine in a solvent with higher solubility followed by precipitation with a solvent of lower solubility, resulting in a crystal form with enhanced reproducibility and suitability for industrial production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing dezocine medications are used, then the medication can be administered, but the solubility is extremely poor which affects stability, bioavailability and therapeutic effect
Solution Approach 1:
The patent changes the physical state parameter of dezocine from amorphous to crystalline form, which fundamentally alters its solubility and stability characteristics. The crystal form provides a more ordered molecular arrangement that enhances both solubility and stability simultaneously
Solution Approach 2:
The patent utilizes phase transition from amorphous to crystalline state to improve the medication properties. This phase change enables the dezocine to achieve both high solubility and good stability, resolving the contradiction between these two parameters
2Reliability
If existing dezocine medications are used, then the medication can be administered, but the solubility is extremely poor which affects bioavailability and absorption
Solution Approach 1:
The patent changes the physical state parameter of dezocine from amorphous to crystalline form, which fundamentally alters its solubility and stability characteristics. The crystal form provides a more ordered molecular arrangement that enhances both solubility and stability simultaneously
Solution Approach 2:
The patent utilizes phase transition from amorphous to crystalline state to improve the medication properties. This phase change enables the dezocine to achieve both high solubility and good stability, resolving the contradiction between these two parameters
3Reliability
If a new crystal form is developed through dissolution and precipitation, then solubility and stability are improved, but the preparation process becomes more complex
Solution Approach 1:
The patent utilizes phase transition from amorphous to crystalline state to improve the medication properties. This phase change enables the dezocine to achieve both high solubility and good stability, resolving the contradiction between these two parameters
Solution Approach 2:
The patent uses a solvent as an intermediary medium to achieve crystal formation. By dissolving dezocine in a suitable solvent and controlling precipitation conditions, the process achieves crystal formation with improved properties while maintaining reasonable process simplicity
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 new crystal form exhibits faster dissolution and absorption, improved stability, and lower content of related substances during storage, significantly increasing solubility and bioavailability compared to existing forms.
Implementation Method 1
dissolution of dezocine in a solvent with higher solubility
Implementation Method 2
precipitation with a solvent of lower solubility
Implementation Method 3
resulting in a crystal form with enhanced reproducibility
Data Source
AI summary
Disclosed is a crystal form of dezocine. The X-ray powder diffraction (XRD) pattern thereof is determined using Cu/K-α1 and has diffraction peaks at the 2θ value of 9.1±0.2 and 12.2±0.2, with the height % of these diffraction peaks greater than 20. Also disclosed are a preparation method for the crystal form, a pharmaceutical composition and use thereof. The crystal form of dezocine has good solubility, the preparation method has simple operations, good reproducibility, suitability for industrial production and the like.