55781-86-7
5-methoxy-2-methyl-2H-pyrazole-3-carboxylic acid methyl ester
→
~78%
126674-95-1
3-甲氧基-1-甲基-1H-吡唑-5-羧酸
52867-42-2
3-羟基-1-甲基吡唑-5-羧酸甲酯