1 4VN 1-{5-[2-chloro-5-(hydroxymethyl)phenyl]pyridin-2-yl}piperidine-4-carboxylic acid 1.000 2 4VL 1-{5-[2-fluoro-5-(hydroxymethyl)phenyl]pyridin-2-yl}piperidine-4-carboxylic acid 0.920