Reference Standards

MedChemExpress (MCE) offers a wide variety of reference standards (analytical standards), each rigorously tested under the ISO 17025 system. Comprehensive analytical documentation accompanies each product, providing evidence of purity, content, and structure, supporting measurement traceability. We use various detection methods (HPLC, GC, MS, NMR, etc.) for structural identification and purity assessment. Additionally, we use TGA (Thermo gravimetric Analysis), LOD (Loss on Drying), KF (Karl Fischer), or ROI (Residue On Ignition), etc., for measuring loss on drying, residue after dissolution, moisture content, and ash content, respectively. Content calculation is performed using a mass balance method. Our reference standard products cover diverse compounds, including active small molecules, natural products, lipids, isotopes (Internal standards), and more. These products are applicable in fields including pharmaceutical analysis, target screening, identification and quantification of biomarkers, environmental monitoring, and food safety.