Etoricoxib Impurity D with CAS No: 221615-75-4 is an impurity standard of Etoricoxib. Etoricoxib is a medication used to relieve pain and inflammation associated with various conditions such as osteoarthritis, rheumatoid arthritis, and other musculoskeletal disorders.Etoricoxib is belongs to a class of drugs known as selective cyclooxygenase-2 (COX-2) inhibitors. Buy high quality Etoricoxib Impurity D from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Etoricoxib Impurity D