5-(3-bromopropyl)-3-methyl-[1,2]oxazolo[4,5-d]pyridazin-4-one

2-(3-bromopropyl)phthalazin-1-one

3-[3-(2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl)propyl]-1,3-diazaspiro[4.5]decane-2,4-dione

3-溴-

1-苯基-4,5-二氢-1H-吡唑