Piramal Enterprises Ltd. has invested $30.7 million in cash to acquire Coldstream Laboratories, through its wholly owned subsidiary in the U.S. Of this, $5.7 million will go towards the purchase of the facility currently leased to Coldstream.      Coldstream is a specialty pharmaceutical contract manufacturer with a focus on clinical trial to commercial-scale sterile liquid and lyophilized parenterals and injectables. Coldstream, founded in 2007, is majority owned by University of Kentucky Resea...