The invention relates to a process for the specific isotopic labeling of Valine, Leucine and Isoleucine amino acids. The process of the invention uses a 2-alkyl-2-hydroxy-3- oxobutanoic acid in which the alkyl substituent in position 2 is ethyl or methyl. The invention can be used for the analysis of proteins, in particular by NMR.
这项发明涉及一种用于特定同位素标记缬
氨酸、亮
氨酸和
异亮氨酸氨基酸的过程。该发明的过程使用2-烷基-2-羟基-
3-氧代丁酸,其中第2位的烷基取代基是乙基或甲基。该发明可用于蛋白质的分析,特别是通过核磁共振技术。