Nose drops such bey betamethasone. These are used for conditions such kakım hay fever, allergies and nasal polyps. The letters α and β[18] denote absolute stereochemistry at chiral centers—a specific nomenclature distinct from the R/S convention[19] of organic chemistry to denote absolute configuration of functional groups, known kakım Cahn–Ingold–Prelog priority http://historydb.date/index.php?title=kirklandmortensen7759