text: << (-)-6-(7-Methoxy-2-(trifluoromethyl)pyrazolo[1,5-a]pyridin-4-yl)-5-methyl-4,5-dihydropyridazin-3(2H)-one >> (KCA-1490) exhibits moderate dual [[ PDE3/4 ]]-inhibitory activity and promises as a combined bronchodilatory/anti-inflammatory agent.