98477-08-8
1H-Pyrazole-4-carboxylic acid, 1-(1,1-dimethylethyl)-5-methyl-, ethylester
→
~87%
288251-51-4
1-(叔丁基)-5-甲基-1H-吡唑-4-羧酸
950858-97-6
methyl 1-tert-butyl-5-methylpyrazole-4-carboxylate
~76%