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5 articles in total
Continuous Flow vs Batch Reaction for SM-102 Synthesis: What We Learned from Multi-kg GMP Campaigns
This article shares insights from multi-kg GMP campaigns for SM-102, an ionizable lipid used in Moderna’s mRNA-LNP platform. Batch scale-up often suffers from purity drops below 98%, broadened impurity profiles, and residual solvent exceedances due to poor heat/mass transfer, hot spots, and inconsistent pH/temperature control. The solution is a telescoped continuous flow process with micro/meso-fluidic reactors, in-line PAT (HPLC/FTIR), and continuous work-up/crystallization. Results show consistent impurity fingerprints, 30–40% higher yield, 99.5% purity, and <500 ppm residual solvents, establishing continuous flow as the only robust, ICH-compliant route for commercial SM-102 supply.
How do customized hydrazine building blocks simplify your heterocyclic synthesis?
4-Chlorophenylhydrazine hydrochloride is a key intermediate for heterocyclic synthesis in pharmaceuticals and agrochemicals. Traditional processes face unstable diazonium salts, reducing agent caking, poor crystallization, low yields, high waste, and toxicity risks. The optimized CDMO process achieves high yield and purity through precise temperature/pH control, liquid reducing agent, and optimized crystallization, while integrating low‑temperature control, inert atmosphere, tail‑gas recycling, GMP production, and multi‑ton supply. Outsourcing reduces development time and compliance burdens. The process follows green chemistry principles and suits kinase inhibitors, antifungals, dyes, and more.
How Custom Fluorinated Building Blocks Accelerate Your R&D
Trifluoromethanesulfonic anhydride (Tf2O) is a highly efficient electrophilic activator in modern pharmaceutical synthesis, enabling precise introduction of fluorine atoms or trifluoromethyl groups into molecular scaffolds. This enhances metabolic stability, lipophilicity, and biological activity—key parameters in drug discovery. Its mechanism involves converting alcohols into reactive triflates, facilitating nucleophilic substitutions and cross-couplings. As a professional CDMO, we offer custom synthesis of Tf2O at ≥99% purity, scalable from gram to kilogram and beyond, with stringent quality control and fast delivery. Our services help pharmaceutical companies streamline fluorination steps, shorten synthetic routes, reduce costs, and accelerate the transition from lab to commercialization for novel fluorinated APIs.
Linker Design in Antibody-Drug Conjugates: Strategies and Cutting-Edge Advances
Antibody-drug conjugates (ADCs) enable targeted cancer therapy by linking antibodies to cytotoxic drugs, realizing Paul Ehrlich’s “magic bullet.” A recent review highlights linkers as key to stability and efficacy: cleavable linkers (e.g., enzyme-sensitive Val-Cit) enable precise tumor release, while non-cleavable linkers offer better plasma stability. Core strategies include site-specific conjugation, release triggers, and hydrophilic spacers to prevent aggregation. Advances feature dual-stimuli triggers, traceless release, branched structures, and AI tools like Linker-GPT. With 17 ADCs approved, challenges remain in immunogenicity, manufacturing, and resistance; future efforts focus on computational modeling and nanotechnology to expand applications beyond oncology.
Review of the Development History of TACs Multifunctional Linkers
Targeted chimeras (TACs, such as PROTACs and LYTACs) represent a potential strategy for the selective degradation of difficult-to-drug proteins, acting through bifunctional molecules or molecular glues to provide novel therapies for diseases that are difficult to treat with traditional small molecules. As a bridge connecting target protein ligands and effector protein ligands, the linker of TACs is crucial to molecular conformation and activity. Recent advancements in photo-controlled and cleavable linker design have improved the efficiency and spatiotemporal control of TACs, but challenges remain, such as optimizing stability.