1-Ethyl-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridinecarbonitrile 1-Ethyl-1,2-dihydro-6-hydroxy-4-methyl-2-oxonicotinonitrile 28141-13-1 3-Pyridinecarbonitrile, 1-ethyl-1,2-dihydro-6-hydroxy-4-methyl-2-oxo- EINECS 248-865-5