1,2-Dihydro-4-(1,2-dihydro-2-oxo-1-pyridyl)-2,2-dimethyl-1-oxonaphthalene-6-carbonitrile 149455-36-7 2-Naphthalenecarbonitrile, 5,6-dihydro-6,6-dimethyl-5-oxo-8-(2-oxo-1(2H)-pyridinyl)- 5,6-Dihydro-6,6-dimethyl-5-oxo-8-(2-oxo-1(2H)-pyridinyl)-2-naphthalenecarbonitrile UR 8225