Etoricoxib Impurity 19 with CAS No: 307531-96-0 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 19 from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Etoricoxib Impurity 19