PDE/TRPA1/CHIT1-IN-1 is a phosphodiesterases (PDEs), TRPA1, and hCHIT1 (KD of 37.7 µM) inhibitor. PDE/TRPA1/CHIT1-IN-1 is a broad-spectrum PDE inhibitor, potently targeting key isoforms including PDE4B, PDE7A, PDE3A, and PDE8A with IC50s of 15.54, 15.15, 8.39 and 16.46 µM. PDE/TRPA1/CHIT1-IN-1 suppresses NLRP3 inflammasome activation and inhibits NF-kappaB phosphorylation, downregulating the expression of pro-inflammatory genes (TNF-alpha and IL-6) in vivo. PDE/TRPA1/CHIT1-IN-1 can be used for chronic obstructive pulmonary disease (COPD) and related inflammatory lung disorders research[1].