7364-25-2
3-羟基-1H-吲唑
→
89438-41-5
ethyl 2-ethyl-3-oxoindazole-1-carboxylate
16105-24-1
2,3-二氢-3-氧代-1H-吲唑-1-羧酸乙酯
89438-53-9
2-ethyl-1H-indazol-3-one