33332-25-1
5-氯吡嗪-2-羧酸甲酯
→
~49%
848952-83-0
5-氯吡嗪-2-羧酸肼
1254073-53-4
1,1-dimethylethyl 2-[(5-chloro-2-pyrazinyl)carbonyl]hydrazinecarboxylate