99% High Quality Trametinib DMSO solvate CAS 1187431-43-1 Pharmacy Grade Raw Power

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Chemical Profile and Structural Characteristics

Trametinib DMSO solvate (CAS 1187431-43-1) is a crystalline form of the MEK inhibitor trametinib incorporating dimethyl sulfoxide molecules within its crystal lattice. This specific solid form features the parent compound, chemically described as (2R,3S)-2,3-bis(amino(3-fluorophenyl)methyl)-5-((E)-4-(hydroxyimino)cyclohex-1-en-1-yl)-6-(((R)-piperidin-3-yl)methoxy)pyrimidin-4(3H)-one, coordinated with DMSO solvent molecules in a defined stoichiometric ratio. The solvate formation significantly modifies the compound's physicochemical properties including enhanced stability under specific conditions and altered dissolution characteristics. It presents as a solid with defined crystalline morphology and maintains consistent solvate composition when stored under appropriate conditions.

Mechanism of Action and Pharmacological Activity

The compound functions as a highly selective and potent allosteric inhibitor of mitogen-activated protein kinase kinases 1 and 2 (MEK1/2), key components of the RAS/RAF/MEK/ERK signaling pathway. It binds to a unique allosteric site adjacent to the ATP-binding pocket, locking MEK in a catalytically inactive conformation and preventing phosphorylation of ERK1/2 downstream targets. This inhibition disrupts cellular proliferation signals and induces cell cycle arrest in tumors dependent on MAPK pathway activation. The DMSO solvation does not alter the fundamental pharmacological activity but may influence the compound's dissolution rate and early pharmacokinetic profile.

Therapeutic Applications and Clinical Significance

Trametinib is approved for the treatment of BRAF V600 mutation-positive metastatic melanoma, either as monotherapy or in combination with dabrafenib, and for BRAF V600E mutation-positive metastatic non-small cell lung cancer. Clinical protocols typically administer 2 mg once daily until disease progression or unacceptable toxicity, with dose modifications implemented for specific adverse effects. The compound has demonstrated significant improvement in progression-free and overall survival in multiple phase III clinical trials, establishing its role as a standard of care in these molecularly defined malignancies. The DMSO solvate form is primarily utilized in early development stages and for specific manufacturing processes.

Formulation Considerations and Development Strategy

We supply Trametinib DMSO solvate as an intermediate form suitable for conversion to the final drug substance used in pharmaceutical products. The solvate form offers advantages in purification, crystallization control, and chemical stability during specific manufacturing stages. Formulation approaches focus on the controlled desolvation process to ensure complete removal of DMSO while maintaining the desired polymorphic form of the final active pharmaceutical ingredient. Our technical data includes comprehensive characterization of the solvate structure, conversion kinetics to alternative solid forms, and guidance on processing conditions to achieve the target physicochemical properties for the final drug product.

Quality Specifications and Analytical Characterization

Our Trametinib DMSO solvate meets rigorous quality standards with specifications including confirmation of solvate stoichiometry by thermogravimetric analysis and Karl Fischer titration, identification by X-ray powder diffraction and spectroscopic methods, and of related substances and potential degradation products. Critical quality attributes encompass residual solvent analysis beyond DMSO, heavy metals, microbial limits, and specific characterization of crystalline properties. We employ validated analytical methods including HPLC for potency and purity assessment, differential scanning calorimetry for solvate characterization, and dynamic vapor sorption for hydrate formation potential. Storage recommendations specify controlled temperature and humidity conditions to maintain solvate stability throughout the supply chain.

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