Natural Extract

Natural product reference standards are essential analytical tools for quality control of traditional herbal medicines, botanical drug development, plant extract specification verification, and bioactivity research on natural compounds. The Chinese Pharmacopoeia (ChP) mandates quantitative analysis of active and marker constituents in herbal medicines and patent TCM preparations, while the EU Traditional Herbal Medicinal Products Directive (THMPD), FDA Botanical Drug Guidance, and USP botanical extract monographs impose corresponding requirements on natural product standard quality and traceability.

The structural diversity and complexity of natural products — combined with low abundance in plant matrices, challenging isolation and purification, and widely varying physicochemical properties — place exceptional demands on reference standard preparation technology and analytical characterization capability. The catalog covers saponins (ginsenosides, saikosaponins, glycyrrhizin), flavonoids (quercetin, rutin, icariin), phenolic acids (chlorogenic acid, salvianolic acids), terpenoids (paclitaxel, ursolic acid, artemisinin), alkaloids (berberine, matrine, ephedrine), amino acids and peptides, polysaccharides, and lignans, encompassing major bioactive constituents from Chinese medicinal herbs, food-medicine homologous species, and tropical medicinal plants.

CATO Research Chemicals Inc. offers over 3,150 natural product reference standards, with all compounds fully characterized by ¹H-NMR, ¹³C-NMR, and MS, and purity assigned by HPLC, supplied with complete Certificates of Analysis. For rare or scarce compounds, CATO maintains preparative isolation capability from botanical source materials and accepts custom preparation orders. The majority of catalog products are available from stock for rapid fulfillment of domestic and international orders.