Use our Pill Identifier tool to quickly identify tablets and capsules using imprint codes, pill shape and color..Use our comprehensive pill identifier to quickly and easily identify pills by imprint, shape, color or drug name. Over 11500 drug images, updated daily..Quickly identify drugs and medications, including pill identifying pictures, using the RxList Pill Identifier Tool. Use the imprint, color, or shape of your pill one, all or any combination of the fields below and our Pill Identification Tool Pill Finder will show you pictures .Identification of Pharmaceutical Impurities. Fenghe Qiu and Daniel L. Norwood. Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield, Connecticut, USA. Abstract: Identification of pharmaceutical impurities is a criticalytical activity in the drug development process whose goal is to fully elucidate the chemical structures..