ethyl 1-methyl-4-(trifluoromethyl)-1H-pyrazole-3-carboxylate

1-甲基-3-三氟甲基-1H-吡唑-4-羧酸乙酯

3-methyl-4-phenyl-2H-oxadiazol-3-ium-5-one

2,6-dimethylindazole-4,7-dione

2,5-dimethylindazole-4,7-dione