Synonyms: (5Z)-5-{[5-(3-Chlorophenyl)-2-furyl]methylene}-2-hydroxy-4-methyl-6-oxo-5,6-dihydropyridine-3-carbonitrile;(5Z)-5-{[5-(3-Chlorophenyl)-2-furyl]methylene}-6-hydroxy-4-methyl-2-oxo-2,5-dihydropyridine-3-carbonitrile;3-pyridinecarbonitrile, 5-[[5-(3-chlorophenyl)-2-furanyl]methylene]-2,5-dihydro-6-hydroxy-4-methyl-2-oxo-, (5Z)-;3-pyridinecarbonitrile, 5-[[5-(3-chlorophenyl)-2-furanyl]methylene]-5,6-dihydro-2-hydroxy-4-methyl-6-oxo-, (5Z)-