1-Ethyl-2-methyl-3-hydroxy-pyrid-4-one 1-Ethyl-2-methyl-3-hydroxypyridin-4-one 1-Ethyl-3-hydroxy-2-methyl-4(1H)-pyridinone 30652-12-1 4(1H)-Pyridinone, 1-ethyl-3-hydroxy-2-methyl- 5-21-12-00114 (Beilstein Handbook Reference) BRN 1449942 CP21 CP21 (Chelating agent) EMHP