78-81-9
异丁胺
+
30720-25-3
4-氯-1-乙基-1H-吡唑[3,4-b]吡啶-5-羧酸乙酯
→
34966-24-0
ethyl 1-ethyl-4-(2-methylpropylamino)pyrazolo[3,4-b]pyridine-5-carboxylate