Nose drops such kakım betamethasone. These are used for conditions such as 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 birli Cahn–Ingold–Prelog priority https://www.northwestu.edu/?URL=https://tr.wikipedia.org/wiki/Vitamin