23723-23-1 3-Pyridinecarboxylic acid, 5-fluoro-, butyl ester 5-22-02-00173 (Beilstein Handbook Reference) BRN 0474653 Butyl 5-fluoro-3-pyridinecarboxylate Butyl 5-fluoronicotinate Nicotinic acid, 5-fluoro-, butyl ester (8CI)