247098-17-5
ethyl 3-cyano-2-ethyl-3-hydroxybutanoate
→
~14%
61892-80-6
1-acetyl-4-ethyl-3-methyl-2H-pyrrol-5-one
607-97-6
2-乙基乙酰乙酸乙酯
766-36-9
3-乙基-4-甲基-3-吡咯啉-2-酮
119018-29-0
4-[2-[(3-乙基-4-甲基-2-氧代-3-吡咯琳)甲酰胺基]乙基]苯磺酰胺
119043-16-2
4-[2-[(4-乙基-3-甲基-5-氧代-2H-吡咯-1-羰基)氨基]乙基]苯磺酰氯