Pharma/fine chemicals roundup—20 May 2014

12:46 PM | May 20, 2014 | Deepti Ramesh

AstraZeneca rejects Pfizer's latest offer AstraZeneca has rejected Pfizer's latest offer to buy AstraZeneca. Pfizer says its offer, which values AstraZeneca at £69 billion ($116 billion), is "final...