N-Nitroso Metoprolol is a nitrosamine impurity that can be found in metoprolol-based medications, such as Metoprolol Tartrate and Metoprolol Succinate (Lopressor, Toprol-XL), which are commonly used to treat high blood pressure, angina, and heart conditions. Nitrosamines, including N-Nitroso Metoprolol, are classified as probable human carcinogens, raising concerns over their presence... https://chemicea.com/product/n-nitroso-metoprolol