Propyphenazone, also known as phenazon, is a pharmaceutical substance commonly used as an analgesic and antipyretic medication. Its CAS number is 479-92-5.

It belongs to the class of pyrazolone derivatives and is often used to relieve pain associated with headaches, dental pain, and musculoskeletal conditions. Additionally, it can help reduce fever by acting on the hypothalamus, which controls body temperature.

Propyphenazone works by inhibiting the synthesis of prostaglandins, which are chemical mediators involved in the transmission of pain signals and the regulation of body temperature. By reducing the production of these inflammatory substances, it helps alleviate pain and fever.

This pharmaceutical substance is available in various forms, including tablets, capsules, and injections, and is often used in combination with other analgesics and antipyretics. It is typically administered orally, but injections may be used in severe cases.

Although propyphenazone is generally considered safe when used as d