This study aims to characterize and quantify bioactive compounds in three gastropod species, namely Natica fasciata, Terebralia sulcata, and Littorina scabra, found in the mangrove ecosystem of Pulau Payung, Banyuasin, South Sumatra. The extraction process was carried out using the maceration method with 96% ethanol solvent, followed by phytochemical testing and LC-MS analysis to determine the …