英文别名1,2-Dihydro-2-Oxo-4-Pyridinecarboxylic Acid Ethyl Ester; 4-Pyridinecarboxylic acid, 1,2-dihydro-2-oxo-, ethyl ester; ethyl 2-oxo-1H-pyridine-4-carboxylate; Avatrombopag Impurity 103; Ethyl 2-hydroxyisonicotinate; 2-Hydroxyisonicotini; 1,2-Dihydro-2-oxopyridine-4-carboxylic acid ethyl ester; ethyl 2-hydroxy-pyridine-4-carboxylate; 2-keto-1H-pyridine-4-carboxylic acid ethyl ester; 2-Hydroxy-isonicotinsaeure-aethylester 
