ethyl (3E)-3-[(6-chloropyridazin-3-yl)hydrazinylidene]butanoate

α-tolyl-α-hydroxypropionic acid

3-氯-6-(1H-吡唑-1-基)哒嗪

3-dimethylamino-6-(1H-pyrazol-1-yl)pyridazine

3-氯-6-甲氧基哒嗪