Description_x000D_ Packaging_x000D_ 5, 25 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ SPL-334 is an inhibitor of S-Nitrosoglutathione reductase (GSNOR), the enzyme responsible for regulating cellular concentrations of S-Nitrosoglutathione (GSNO), which plays a critical role in nitric oxide signaling in the respiratory tract. In a mouse model of allergic airway inflammation, SPL-334 reduced airway hyperreactivity, and in a bleomycin injury model of interstitial lung disease, SPL-334 reduced lung inflammation and fibrosis. Studies for treatment of asthma, idiopathic pulmonary fibrosis (IPF), and inflammation are ongoing.