A unique collection of 1680 pure natural products and their derivatives with known biological activity for drug discovery, pharmacological study, and stem cell differentiation, and can be used for high throughput screening (HTS) and high content screening (HCS); All products with known biological activity: Documentation with clear source: isolated natural products from plant, animal, microorganism, etc. Structurally diverse: 1680 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 findings