Safety Study to Evaluate MN-221 in Chronic Obstructive Pulmonary Disease (COPD) Patients

This drug is intravenously infused and delivers 1200 mcg to the patient in 1 hour duration. This dose is repeated over 4 days (Day 1 1200 mcg once; Day 2 1200 mcg twice; Day 3 1200 mcg twice; Day 4 1200 mcg once).

This intervention consists of a placebo intravenous infusion, one that contains no active medication. During the double-blind procedure, patients will be infused with placebo intravenously one time on Day 1, twice on Days 2 and 3, and one time on Day 4.