Fenpiverinium is a medication used to treat gastrointestinal disorders. Impurities in fenpiverinium can occur during the manufacturing process and can affect the safety and efficacy of the drug. Impurities such as related compounds, solvents, and heavy metals can be harmful to human health and need to be monitored and controlled during the production and quality control processes. Strict regulatory guidelines are in place to ensure that the levels of impurities in fenpiverinium are within acceptable limits.