1-Propyl-2-ethyl-3-hydroxy-4-pyridone 115864-74-9 2-Ethyl-3-hydroxy-1-propyl-4(1H)-pyridinone 2-Ethyl-3-hydroxy-1-propyl-4-pyridinone 4(1H)-Pyridinone, 2-ethyl-3-hydroxy-1-propyl- Pehp-1