756751-88-9
1-Piperazinecarboxylic acid, 4-(5-chloro-3-pyridinyl)-, 1,1-dimethylethylester
→
~74%
223794-95-4
1-(5-氯吡啶-3-基)哌嗪
2457-47-8
3,5-二氯吡啶