Roxatidine is a medication used to treat ulcers and gastroesophageal reflux disease (GERD). During the manufacturing process of Roxatidine, impurities may be produced, which are unwanted substances that can affect the quality and safety of the medication. It is important to identify and control these impurities to ensure that the medication is effective and safe for patients to use. Various analytical techniques are used to detect and quantify these impurities, and strict regulations are in place to ensure that their levels are kept within acceptable limits.