Mirtazapine Hemihydrate and its Impurities

Mirtazapine Hemihydrate, sold under the brand name Remeron among others, is an atypical antidepressant, and as such is used primarily to treat depression. Reference standards of Mirtazapine Hemihydrate API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.