Methyl 4-hydroxynicotinate

4-HYDROXY-NICOTINIC ACID METHYL ESTER

Methyl 4-hydroxypyridine-3-carboxylate

4-HYDROXYPYRIDINE-3-CARBOXYLIC ACID METHYL ESTER

3-Pyridinecarboxylicacid,4-hydroxy-,methylester(9CI)