2-氟-5-溴吡啶-3-甲醛

5-bromo-3-(1,3-dioxolan-2-yl)-2-hydrazinylpyridine hydrochloride

5-bromo-3-(4,4,5,5-tetramethyl-1,3-dioxolan-2-yl)-2(1H)-pyridinone hydrazone

2-溴丙二醛

1H-​Pyrazol-​3-​amine