oxybuprocaine and its Impurities

Oxybuprocaine, also known as benoxinate or BNX. It is sold by Novartis under the brand names Novesine or Novesin. It is used to temporarily numb the front surface of the eye so that the eye pressure can be measured or a foreign body removed. Reference standards of Oxybuprocaine API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.