Zeneca

Zeneca Group PLC, trading as Zeneca, was a British multinational pharmaceutical company headquartered in London, United Kingdom. It was formed in June 1993 by the demerger of the pharmaceuticals and agrochemicals businesses of Imperial Chemical Industries into a separate company listed on the London Stock Exchange.

In 1999, Zeneca and the Sweden-based pharmaceutical company Astra AB merged to form AstraZeneca plc.Zeneca shareholders received 53.5% of the shares, while Astra shareholders received the remaining 46.5%.

Zeneca's largest therapeutic area was oncology, in which its key products included Casodex, Nolvadex and Zoladex. Other key products included heart drug Tenormin.