Pesticides, primarily used in agriculture, aim to prevent or control pests and are categorized by target organism and chemical structure. Some pesticides can have significant ecological impacts, posing risks to human health and the food chain. Chemodex provides a diverse range of reference compounds, including insecticides, herbicides, fungicides, and growth factor inhibitors, for studying their mode of action. Quorum sensing, a bacterial signaling system, coordinates various functions based on population density, and Chemodex offers an extensive selection of Quorum Sensing Agents and Inhibitors, exploring their potential applications in immunology and oncology.