1312949-20-4
methyl 3-chloro-1-methyl-4,5-dihydro-1H-pyrazole-5-carboxylate
→
~28%
173841-06-0
3-氯-1-甲基-1H-吡唑-5-羧酸甲酯
1312949-19-1
methyl 3-hydroxy-1-methyl-4,5-dihydro-1H-pyrazole-5-carboxylate
624-49-7
富马酸二甲酯