3-Oxopomolic acid methyl ester, also known as Pomonic acid methyl ester, is a derivative of the natural triterpenoid pomolic acid isolated from plants such as apples. Used in research as an intermediate for synthesizing bioactive compounds, particularly in the development of antibiotics and antimicrobial agents. Shows potential in studies related to bacterial enzyme inhibition, especially in targeting fatty acid synthesis pathways essential for bacterial survival. Also utilized in the preparation of analogs for structure-activity relationship (SAR) studies in medicinal chemistry. Its ester form enhances membrane permeability, making it valuable in pharmacokinetic evaluations. Due to its plant-derived origin, it is also investigated in plant biochemistry for roles in metabolic pathways and natural product synthesis.