1. 咪唑乙烟酸杂质(5-乙基吡啶-2,3-二羧酸二乙酯)

咪唑乙烟酸杂质(5-乙基吡啶-2,3-二羧酸二乙酯)

Imazethapyr Impurity (Diethyl 5-ethylpyridine-2,3-dicarboxylate)