Risedronate Hemipentahydrate Sodium and its Impurities

Risedronate Hemipentahydrate Sodium, often used as its sodium salt risedronate sodium, is a bisphosphonate. It is used to treat or prevent osteoporosis, and treat Paget's disease of bone. Reference standards of Risedronate Hemipentahydrate Sodium API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.