ethyl 2-cyano-2-fluoro-4-methylpentanoate

2-氟-2-异丁基丙二酰胺

ethyl 2-(ethoxy(imino)methyl)-2-fluoro-4-methylpentanoate

2-carbamoyl-2-fluoro-4-methylpentanoic acid

2-cyano-4-methylpentanoic acid