Ethyl 3-hydroxyisonicotinate

Ethyl 3-hydroxypyridine-4-carboxylate

3-Hydroxypyridine-4-carboxylic acid ethyl ester

4-Pyridinecarboxylic acid, 3-hydroxy-, ethyl ester

Ethyl 3-hydroxypyridine-4-carboxylate, 4-(Ethoxycarbonyl)-3-hydroxypyridine