Desloratadine (Standard) is the analytical standard of Desloratadine. This product is intended for research and analytical applications. Desloratadine (Sch34117) is the orally active major metabolite of the nonsedating H1-antihistamine Loratadine. Desloratadine is a selective H1-receptor antagonist that has anti-allergic and anti-inflammatory activities[1][2].