N-Isopropylnortropine Methobromide (Ipratropium EP Impurity A) is an impurity of Ipratropium (Bromide Monohydrate: I740500), an Atropine (A794625)-like bronchodilator that acts via an anticholinergic pathway, and is used to treat patients with chronic bronchitis, cardiac obstructive pulmonary disease (COPD) and asthma.
