| 4-Pyridinecarboxylic acid, ethyl ester |
| isonicotinic acid, ethyl ester |
| ethyl isonicotinate |
| Ethyl pyridine-4-carboxylate |
| isonicotinic acid ethyl ester |
| pyridine-4-carboxylic acid ethyl ester |
| ethyl 4-pyridinecarboxylate |
| 4-Pyridinecarboxylic acid,ethyl ester |
