MedChemExpress

MedChemExpress (MCE) is a premier global supplier of high-purity research chemicals and bioactive compounds, including small molecule inhibitors, screening libraries, life science peptides, and recombinant proteins. Serving academic and industrial biomedical researchers, MCE offers an extensive catalog of top-tier reagents to accelerate laboratory discoveries and early-stage drug development.
Purchase from MedChemExpress on Scientist.com

Quality infrastructure sits behind the catalogue: an independent laboratory of more than 12,000 square metres, over 400 precision instruments and a technical team of 300-plus, operating to ISO 9001:2015, ISO 17025 and cGMP with CNAS accreditation and ILAC-MRA recognition. Beyond small molecules, MCE stocks recombinant proteins, oligonucleotides including siRNAs, antisense sequences, aptamers, CpG ODNs and mRNA, lipids and LNP components, antibody-drug conjugate linkers and payloads, peptide-drug and radionuclide-drug conjugates, isotope-labelled compounds, fluorescent dyes, reference standards and GMP-grade small molecules. The screening collections run to 74 signaling pathway libraries and 45 disease-focused libraries, plus fragment, DNA-encoded, AI-enabled, natural product and Traditional Chinese Medicine sets. Laboratory services cover kinase, ion channel, GPCR and nuclear receptor screening, surface plasmon resonance, high-content screening, affinity mass spectrometry, molecular docking and custom peptide or oligonucleotide synthesis.