1-O-ethyl 4-O-methyl 3-methyl-2-oxobutanedioate

1-(吡啶-2-基)-2-丁酮

1-吡啶-2-基-2-(吡啶-2-基甲基)丁烷-2-醇

6-ethyl-1-phenyl-2H-pyrazolo[3,4-d]pyrimidin-4-one

甲基2-(三甲基硅基)丙酸酯