AstraZeneca (Astra Zeneca, the world's leading pharmaceutical company, was formed in 1999 by the merger of the former Astra Corporation of Sweden and the former Jellicom Corporation of the United Kingdom, headquartered in London, United Kingdom, and the headquarters of research and development in Sweden, dedicated to the development, production and sales of pharmaceutical products and medical services. AstraZeneca is listed in the Dow Jones Sustainability Index (global) and the FTSE4Good Index, which shows corporate social responsibility.