methyl 4-(3-formylpyridin-2-yl)benzoate

2-(1-吡咯烷基)吡啶-3-甲醛

ethyl 2-pyrazolo[3,4-b]pyridin-1-ylacetate

1H-吡唑并[3,4-B]吡啶-3-甲腈

ethyl 4-pyridin-3-ylbutanoate