Nomegestrol is a synthetic progestogen that is commonly used in oral contraceptives. However, like all pharmaceutical compounds, it may contain impurities that can affect its safety and efficacy. Nomegestrol impurities can include residual solvents, degradation products, and other contaminants that can impact the quality of the drug. It is important to identify and control these impurities to ensure that the drug is safe for use. Various analytical techniques such as HPLC, GC-MS, and NMR spectroscopy are used to detect and quantify these impurities.