Lyophilized Melphalan Flufenamide Preparation for Aqueous Solubility
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Solution Overview
Problem
Melphalan flufenamide has poor solubility in aqueous solutions, necessitating the use of toxic organic solvents for dissolution, which can damage medical devices and pose hazards to patients and medical personnel.
Innovation Solution
Lyophilization of melphalan flufenamide in the presence of sucrose enhances its solubility in physiologically acceptable solutions, allowing for direct dissolution without organic solvents, thereby improving stability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If organic solvents are used to dissolve melphalan flufenamide, then solubility is improved, but toxicity increases and medical devices may be damaged
Solution Approach 1:
The invention changes the physical state of melphalan flufenamide from crystalline to amorphous form through lyophilization, fundamentally altering its dissolution properties. This parameter change enables the compound to dissolve in aqueous solutions without requiring toxic organic solvents, thereby resolving the contradiction between solubility and toxicity
Solution Approach 2:
The invention creates a composite lyophilized preparation containing melphalan flufenamide combined with excipients such as sucrose, mannitol, or trehalose. This composite material approach improves solubility in aqueous media while maintaining safety and compatibility with medical devices, eliminating the need for toxic organic solvents
2Quantity of substance
If organic solvents are used to dissolve melphalan flufenamide, then solubility is improved, but device compatibility deteriorates
Solution Approach 1:
By transforming melphalan flufenamide into an amorphous state through lyophilization, the invention fundamentally changes its dissolution characteristics. This enables direct dissolution in aqueous solutions compatible with medical devices, eliminating device damage caused by organic solvents while maintaining adequate solubility
Solution Approach 2:
The invention introduces excipients such as sucrose, mannitol, or trehalose as intermediaries in the lyophilized preparation. These substances facilitate aqueous dissolution of melphalan flufenamide without requiring organic solvents, thereby preserving medical device integrity while achieving necessary solubility
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 method provides a stable, water-soluble lyophilized preparation of melphalan flufenamide with increased solubility and reduced toxicity, enabling safer administration and minimizing exposure to hazardous solvents.
Implementation Method 1
Lyophilization or freeze-drying is a method for dehydrating samples used to preserve or increase stability or to stop degradation. In lyophilization, the sample to be lyophilized is dissolved in an aqueous solution and subsequently frozen after which the surrounding pressure is reduced. The sample is then submitted to sublimation, optionally by the application of heat, in order to sublime the frozen water directly from the solid phase to the gas phase.
Implementation Method 2
Due to the low water content of lyophilized products, typically around 1-4%, the action of microorganisms and enzymes is inhibited and the product life thereby increased.
Data Source
AI summary
The present invention is directed to lyophilized pharmaceutical preparations comprising melphalan flufenamide, or pharmaceutically acceptable salts thereof, methods for their preparation, compositions comprising the lyophilized pharmaceutical preparations and their use in the treatment of cancer.