A unique collection of 2800 pure natural products and their derivatives with known biological activity for drug discovery, pharmacological study, stem cell differentiation, fingerprint study and quality research, and can be used for high throughput screening (HTS) and high content screening (HCS);Structurally diverse: 2800 natural products, including more than 30 types of chemicals, such as alkaloids, limonoids, sequiterpenes, diterpenes, pentacyclic triterpenes, sterols, and many other diverse representatives which provide the structural diversity inherent in this group;Detailed compound information with structure, solubility, target, activity, IC50 value, and biological activity description;Cost-effective and competitive price to save your fundings.Documentation with clear source: isolated natural products from plant, animal, microorganism, etc.