吡啶-3-乙酰胺

3-吡啶乙酸

2-(3-吡啶基)-1-乙醇

2-(吡啶-3-基)乙酸肼

3-[(3S,4S,5S)-5-carboxy-4-(carboxymethyl)pyrrolidin-3-yl]pyridine-2-carboxylic acid