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(2012/02/03)2-(3-Chloro-phenyl)-4-(3-chloro-phenylazo)-5-methyl-2,4-dihydro-pyrazol-3-one
3-methyl-4-(m-chlorophenylhydrazono)isoxazol-5-one
4-(3-Chloro-phenylazo)-5-methyl-2-(pyridine-2-carbonyl)-2,4-dihydro-pyrazol-3-one
5-[(3-chlorophenyl)azo]-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridinecarbonitrile