Nitrosamines can be formed through various chemical processes, including the reaction between nitrites and secondary amines in certain conditions. It is a N-Nitroso of secondary amine present in Atenolol. Nitrosamines are part of a broader class of compounds known as N-nitroso compounds. Atenolol is Medication for high blood pressure and heart conditions. Beta-blocker reducing heart rate and pressure.Atenolol for angina and heart rhythm disorders. Buy high quality N-Nitroso Atenolol from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of N-Nitroso Atenolol.