.gamma.-Pyridinecarboxylic acid ethyl ester 1570-45-2 4-Carbethoxypyridine 4-Carboethoxypyridine 4-Pyridinecarboxylic acid, ethyl ester Ethyl 4-pyridinecarboxylate Ethyl isonicotinate Isonicotinic acid ethyl ester Isonicotinic acid, ethyl ester NSC6854 WLN: T6NJ DVO2