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 Azelastine. Nitrosamines are part of a broader class of compounds known as N-nitroso compounds. Azelastine is an antihistamine and mast cell stabilizer commonly employed to alleviate symptoms associated with allergies like hay fever. Structurally, it belongs to the phthalazinone derivative class. Administered as a nasal spray or eye drops, azelastine helps manage issues such as nasal congestion, sneezing, and itchy or runny nose by hindering the release of histamine and other inflammatory substances.
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