(4S,5R,6S)-6-(6-chloropyridin-3-yl)-2-hydroxy-4-methoxy-5-nitrocyclohex-1-enecarboxylic acid allyl ester

2-chloro-5-(2-nitroethenyl)pyridine

6-氯烟酸

6-氯烟醛

2-氯-5-羟甲基吡啶