5-butyl-6-chloro-4-methoxy-pyridine-2-carboxylic acid 、
氢气 在
钯 作用下,
以
甲醇 为溶剂,
以2-Carboxy-4-methoxy-5-n-butyl-pyridine hydrochloride of the formula ##STR12## and of melting point 176° is thus obtained的产率得到2-carboxy-4-methoxy-5-n-butyl-pyridine hydrochloride