1-Butyl-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridinecarbonitrile 1-Butyl-1,2-dihydro-6-hydroxy-4-methyl-2-oxonicotinonitrile 3-Pyridinecarbonitrile, 1-butyl-1,2-dihydro-6-hydroxy-4-methyl-2-oxo- 39108-47-9 EINECS 254-296-3