Muscarinic receptor antagonist. Prepn: R. Banholzer et al., EP 418716; eidem, US 5610163 (1991, 1997 both to Boehringer Ingelheim). Pharmacology: T. Takahashi et al., Am. J. Respir. Crit. Care Med. 150, 1640 (1994). Binding study: E.-B. Haddad et al., Mol. Pharmacol. 45, 899 (1994). Comparative clinical trial with salmeterol, q.v., in chronic obstructive pulmonary disease (COPD): J. F. Donohue et al., Chest 122, 47 (2002).
Bronchodilator.
Bronchodilator; Quaternary Ammonium Compounds; Antimuscarinic