ethyl 4,5-dimethyl-1,3-thiazole-2-carboxylate

2,3-dimethyl-6-nitroimidazo[1,2-a]pyridine

4,6,7-三甲基-1H-咪唑并[1,2-a]嘌呤-9-酮

3-甲基己烷-2,5-二酮

2,3-dimethyl-2-acetonyloxirane