3-benzoyloxypyridine

2,5-二氢-2,5-二甲氧基糠基胺

3-羟基-2,6-吡啶二羧酸

(2,5-dimethoxy-2,5-dihydro-furfuryl)-carbamic acid methyl ester

1-(2-羟基-乙基氨基)-丙烷-2-醇