Browsing by Subject 4-Pyridyl-chromenes/ 4-Pyridyl-pyrano[2,3-c]pyrazoles/ 4-Pipronyl-chromenes/ 4-Pipr­ -onyl-pyrano[2,3-c]pyrazoles/ Pyrano[2,3-c]pyrazoles/ Molluscicidal activity/ Pyridine/ Cinnamonitriles I Carboxamides/ Acrylamides/ Bis-enaminones/ Pyrazolo[3,4 h)[1,6]­ naphthyridines/ Pyrimido[4,5-h}[1,6}naphthyridines/ Pyrido[3,2-c}pyridazine.